A. Should

B. If

C. Will

D. Were

would never have believed

don't believe

don't believe

can't believe

If

Should

When

Unless

If

Since

Had

Did

Little did I know

I knew little

If I knew

Little I did know

Not since

Not until

Only by

Not once

Only if

Not since

In no way

Not until

True

False

True

False

Not since

Not until

Not since

Not until

True

False

Only by

Only when

Only by

Only when

Under no circumstances you should ignore our advice.

did he

had he

had I finished lunch

did I finished

I finished lunch

finished I lunch

Never had Ms Cheung been to Moscow.

Never has Ms Cheung been to Moscow.

Never have Ms Cheung been to Moscow. 

Seldom I have eaten at such an expensive restaurant.

Seldom have I eaten at such an expensive restaurant.

Seldom eaten I have at such an expensive restaurant.

Little did know the police that the man was a criminal.

Little knew the police that the man was a criminal.

Little did the police know that the man was a criminal.

she is beautiful

beautiful she is

is she beautiful

beautiful is she

I don't take

do I take

I take

I do take

Neither can't I

Neither I can

I can't neither

Neither can I

did we have

we have

we had

do we have

have I climbed

I have climbed

have I climb

I climb

A. By taking part in group dating can you only feel more at ease.

B. Only by taking part in group dating can you feel more at ease.

C. The only way to take part in group dating can make you feel more at ease.

D. The way you can feel more at ease is taking part in only group dating.

A. Just before James took up his new post, he realized that he was not suited for it.

B. No sooner had James begun his new job than he knew his decision was wrong.

C. Had James not begun his new job, he would have gone looking for a better one.

D. Since James did not like his new job, he began looking for a better one.

A. Such was the interesting book that I have read it three times.

B. Should the book be interesting, I have read it three times.

C. So interesting was the book that I read it three times.

D. Only if it is an interesting book have I read it three times.

A. Hardly had I arrived home when I was called immediately back to the office.

B. Because I had just arrived home, I was called immediately back to the office.

C. Before I had just arrived home, I was called immediately back to the office.

D. Whenever I had just arrived home, I was called immediately back to the office.

A. Hardly had Alice registered for the course when she received the scholarship.

B. Only after Alice received the scholarship did she register for the course.

C. Having received the scholarship, Alice registered for the course.

D. Registering for the course helped Alice receive the scholarship.

A. Only after investing in the company did Hans inform us of his arrival at the meeting.

B. Not until Hans told us that he would invest in the company did he arrive at the meeting.

C. Hardly had he informed us about his investing in the company when Hans arrived at the meeting.

D. No sooner had Hans arrived at the meeting than he told us about his investing in the company.

A. Not only were local habitants notified of the coming storm but they also made an effort to evacuate everyone.

B. Without being notified of the coming storm, local habitants would have made an effort to evacuate everyone.

C. Hardly had local habitants been notified of the coming storm when they made an effort to evacuate everyone.

D. Not until local inhabitants made an effort to evacuate everyone were they notified of the coming storm.

A. Not until we solved the problem did our teacher arrive.

B. When our teacher arrived, we solved the problem.

C. Until our teacher arrived, we were able to solve the problem.

D. Not until our teacher arrived could we solve the problem.

A. As soon as he borrowed some money from me, he wasted it all.

B. Hardly had he borrowed some money from me when he lost it all.

C. Not only did he save all his money but he also borrowed some from me.

D. Not only did he spend all his money but he borrowed some from me as well.

A. Not only was he shown to a good student but he also proved himself a good athlete.

B. He did not show himself a good student but he proved himself a good athlete.

C. A good student not only showed him but also proved him a good athlete.

D. Not only did he show himself a good student but he also proved himself a good athlete.

A. Not until human’s uncertainties about universe were enlightened did Yuri Gagarin make a successful space flight in 1961.

B. Without human’s uncertainties about universe, Yuri Gagarin wouldn’t have made a successful space flight in 1961.

C. Only after Yuri Gagarin had made a successful space flight in 1961 were human’s uncertainties about universe enlightened.

D. Hardly had Yuri Gagarin made a successful space flight in 1961 when human’s uncertainties about universe were not enlightened.

A. Working for him for only a few months made her feel relaxed.

B. A few months ago, she didn’t find it relaxed working for him.

C. Only after a few months working for him did she feel relaxed.

D. Had she felt relaxed, she would have worked for him for a few months.

A. Such is pollution a significant problem that many people are debating possible solutions.

B. Not until pollution is a significant problem are many people debating possible solutions.

C. Only when pollution is a significant problem are many people debating possible solutions.

D. So significant is the problem that many people are debating possible solutions.

A. Not only is smoking unhealthy but it also costs billions of dollars in health-care costs.

B. Whereas smoking is unhealthy, it costs billions of dollars in health-care costs.

C. If smoking is unhealthy, it will cost billions of dollars in health-care costs.

D. Smoking was so unhealthy that it cost billions of dollars in health-care costs.

A. Not until the researchers developed the first flu vaccination was there a reliable protection against flu.

B. Scarcely had there been a reliable protection against flu when the researchers developed the first flu vaccination.

C. But for the first flu vaccination, there wouldn’t be a reliable protection against flu.

D. So reliable was the protection against flu that the researchers developed the first flu vaccination.

A. A generous man donated much money to the campaign against COVID-19.

B. John was too generous to donate much money to the campaign against COVID-19.

C. John donated so much money to the campaign against COVID-19 that he was very generous.

D. So generous was John that he donated much money to the campaign against COVID-19.

A. Had their first child been born, he would have understood true responsibility.

B. Were his first child not to be born, he wouldn’t understand his true responsibility.

C. Hardly had he understood his true responsibility when their first child was born.

D. Not until he became a father did he understand what true responsibility meant.

A. Not only is the hotel close to the beach but it also offers high-quality customer service.

B. Not only is the hotel far from the beach but it also offers high-quality customer service.

C. The hotel is not close to the beach, but it offers high-quality customer service.

D. Although the hotel offers high-quality customer service, it is close to the beach.

A. Hardly did he switch on the computer when someone knocked on the door.

B. Hardly had he switched on the computer when someone had knocked on the door.

C. Hardly had he switched on the computer when someone knocked on the door.

D. Hardly did he switch on the computer when someone had knocked on the door.

A. Even if they reduce the price of their products, we will order more furniture from them.

B. Unless they reduce the price of their products, we will order more furniture from them.

C. In case they reduce the price of their products, we will order more furniture from them.

D. Only when they reduce the price of their products will we order more furniture from them.

.A. Only after he had spoken to her did she realize her mistake.

B. Were he to speak to her, she would realize her mistake.

C. Had he spoken to her, she wouldn’t have realized her mistake.

D. Not until she realized her mistake did he speak to her.

A. Only when I realized I had been taken in did I hear the full story.

B. Only when I had been taken did I realize that I heard the full story.

C. Only when I realized the full story did I hear I had been taken in.

D. Only when I heard the full story did I realize that I had been taken in.

A. It was not until I realized that I had seasoned the soup with too much salt that I tasted it.

B. As soon as I realized that I had seasoned it with too much salt, I tasted it.

C. Only after seasoning the soup with too much salt did I realize that I had tasted it.

D. Hardly had I tasted the soup when I realized that I had seasoned it with too much salt.

A. They left the concert hall just after the fire alarm went off.

B. The fire alarm had gone off before they left the concert hall.

C. They were leaving the concert hall when the fire alarm went off.

D. No sooner had they left the concert hall than the fire alarm went off.

Were I to get

Were I got

Maybe

Had

Were

Should

Should

Were

Had

Maybe

A. No sooner had he returned from his walk when he got down to writing the letter.

B. Not until he returned from his walk did he get down to writing the letter.

C. Only after he had returned from his walk did he get down to writing the letter.

D. Hardly had he returned from his walk when he got down to writing the letter.

A. No sooner had she put up her umbrella than the rain came down in torrents.

B. The rain came down in torrents as soon as she just has time to put up her umbrella.

C. Only when she had put up her umbrella did the rain come down in torrents.

D. If she hadn’t time to put up her umbrella, the rain wouldn’t have come down in torrents.

Hardly I had come in, did a bomb blow out.

Hardly had I come in when a bomb blew out.

Hardly had I come in, than a bomb blew out.

Barely had I come in, when a bomb blow out.

did he

had he

had I finished lunch

did I finished

I finished lunch

finished I lunch

that it began to snow.

than it began to snow.

when it began to snow.

than did it begin to snow.

Seldom I have eaten at such an expensive restaurant.

Seldom have I eaten at such an expensive restaurant.

Seldom eaten I have at such an expensive restaurant.

Only then had we realised that the jewels had been stolen.

Only then did we realise that the jewels had been stolen.

Only then realised we that the jewels had been stolen.

did we have

we have

we had

do we have

have I climbed

I have climbed

have I climb

I climb

had I heard

I had heard

had I got home, I remembered.

I had got home, I remembered.

I had got home, did I remember.

I phoned did I hear what had happened.

did I phone I heard what had happened.

I phoned I heard had what happened.

I have

have I

You see

Will you see

You will see

Never so many women have

so many women never

Never have so many women

Not only does the enviroment gives us air to breathe

The enviroment gives us air to breathe

The enviroment which gives us air to breathe

Seldom

We rarely

.Seldom do we

Had he

Did he

He had

Little I knew

Little did I know

i knew little

did I ever

had I ever

I ever did

we had finished breakfast that

we had finished breakfast when

had we finished breakfast when

was I told

I was told

I tell was

have so many people

have so many people

did so many people had

Were I there, the problem wouldn't have occured.

Had I been there, the problem wouldn't occur.

Were I there, the problem wouldn't occur.

Had I been there, the problem wouldn't have been occurred.

Only after she thought about what happened.

Only later had she thought about what happened.

Only after had she thought about what happened.

Only later did she think about what had happened.

Only after I had seen her actions, did I realize how beautiful she was.

Only after had I seen her actions, I realized how beautiful she was.

Only when did i see her actions I realized how beautiful she was.

Only when had I seen her actions had I realize how beautiful she was.

you see

will you see

you will see

you have been

Never so many women have

Never have so many women

The women aren't ever

Women who have never

Seldom we do

Seldom do we

Rarely we

Hardly we

he had

he was

had he

did he

Upon entering the store

When he entered the store

After he has entered the store

Only after entering the store

we have

we are

have we

are we

Neither can't I

So can't I

Neither can I

So can I

Rarely does Peter study hard.

Rarely Peter does study hard.

Rarely Peter study hard.

Rarely Peter do study hard.

that it began to snow.

than it began to snow.

when it began to snow.

than did it begin to snow.

did she help

is she helping

does she help

was she helping

do we allow

did we allow

are we allowed

were we allowed

did he try

does he try

is he trying

was he trying

can you forget

you can forget

should you forget

you should forget

she has known

has she known

she had known

had she known

I don't take

do I take

I take

I do take

Were you

you were

Had you been

You had been

Little did I know

I knew little

If I knew

Little I did know

Only if

Not since

In no way

Not until

Never we can accept your conditions.

At no time can we accept your conditions.

At no account do we accept your conditions.

Under no circumstances we can accept your conditions.

did I manage

I managed

seldom does he use

rarely he uses

not once does he use

I have

have I

A. Had he been

B. If he had

C. Unless he had been

D. Were he to be

A. Should

B. If

C. Will

D. Were

would never have believed

don't believe

don't believe

can't believe

If

Should

When

Unless

If

Since

Had

Did

were he have

were he to have

were he had

Did he have

Were I there, the problem wouldn't have occured.

Had I been there, the problem wouldn't occur.

Were I there, the problem wouldn't occur.

Had I been there, the problem wouldn't have been occurred.

Were I there, the problem wouldn't have occured.

Had I been there, the problem wouldn't occur.

Were I there, the problem wouldn't occur.

Had I been there, the problem wouldn't have been occurred.