Do you mind if I _____ the window?

If you pour oil on water, it _____.

If I _____ rich, I _____ a castle.

I would have answered the phone if I _____.

“Why didn’t you come to see me?” “I would have if you _____ me.”

“Did you notice John was not at work today?”

“No, If _____ to work myself, I would have noticed it.”

“What are you going to do tomorrow?”

“If it _____ tomorrow, I think I’ll stay home.”

If your exam results _____ satisfactory, I’ll give you something you want.

If you _____ tomorrow, he will be very angry with you.

If a person always _____ to walk to his destination in a large city, it would be a great waste of time.

If he _____ quietly, he might not have had a second heart attack.

If I ___ you, I would go to night-school to learn a profession.

Should he telephone, _____ me a message.

Had we had a helicopter, we _____ their lives.

We would have been in time if we _____ five minutes earlier.

If it _____ rain tomorrow, we’ll have a picnic.

If everyone _____ the traffic rules, the road will be _____.

If she got some exercise, she _____ fat.

If I had got some sleep last night, I _____ today.