3.    ―The terrible accident is under investigation.

—Actually,quicker action _______ saved those workers trapped in the mine.

2. ―How did you do on the maths test?

―Not so well. I _______ done much better, but I misread the directions for Part One.

用適當的情態(tài)動詞填空

1. Mary__________ have left school, for her bike is still here.

7. We   for the spring outing last week had it not been for the heavy fog.

A. would go         B. could go

C. could have gone    D.  must have gone

5.     You will pay for it,or I'll have the law on you.

4.     Let's go to the movies, will we?

3.     My new bed is not as comfortable as I thought it will be when I bought it.

2.  The meeting is important and he shall be here on time—-he started early enough.

單句改錯

1.  I would get down to work. My boss would be here at any moment.

5.     Lucy is very sad now. You _______ have told her the news, (mustn't/oughtn't to)