—This wall of air is an effective answer to the problem and it ________ work. —B
题型：四川省同步题难度：来源：
—This wall of air is an effective answer to the problem and it ________ work.
—But it is a question to put such a wall of air around the statue. |
| [ ] |
A. may
B. must
C. should
D. could |
答案
| C |
举一反三
— Didn"t they come to the party last week?
— Yes. They didn"t want to come with us at first, but then we ________ persuade them. |
| [ ] |
A. would
B. could
C. were able to
D. had to |
— Could I talk with you right now? I have something urgent.
— If you _____, please come to my office. |
| [ ] |
A. can
B. may
C. must
D. should |
— I promise her daughter ________ get a nice present on her birthday.
— Will it be a big surprise to her? |
| [ ] |
A. should
B. must
C. would
D. shall |
—All of us had a good time in the picnic last Sunday. Pity you weren"t there.
—I really ________ come but I was looking after my mother in hospital. |
| [ ] |
A. must
B. ought to
C. need have
D. should have |
| What a pity. Considering his ability and experience, he ________ better. |
| [ ] |
A. need have done
B. must have done
C. can have done
D. might have done |
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