Bài tập Câu điều kiện - Conditional sentences

I would have saved myself a lot of time and trouble over the years _____ then what I know today.

• if I knew

• if I had known

• I have known

• have I known

If the ozone layer _________ , most living things on the earth ________

• is destroyed - will disappear

• was destroyed - would be disappeared

• had destroyed - would disappear

• were destroyed - would disappear

If the train is late, we ………………….. to the office.

• walk

• will walk

• would walk

• walks

If I lived near the centre , I …………always late.

• wouldn't be

• can be

• won't be

• will be

What would Robert do if he …………..the richest man in the world.

• would be

• were

• will be

• is

If she had read the passage more slowly, the candidate…………………….

• understood

• would have understood

• will understood

• would understand

Jannet will not complete the work if she ………….. feel like doing it.

• had

• does

• doesn't

• didn't

Unless they ……………her to work hard, she would not.

• encourage

• encouraged

• encourages

• encouraging.

If he hadn’t wasted too much time , he ____________ in his examination.

• would fail

• wouldn't fail

• wouldn't have failed

• won't fail

If I had taken that English course, I____________ much progress. (make progress: tiến bộ)

• had made

• would have made

• made

• would make