It s unbelievable that so young a professor ______ make such great progress in t

题型：陕西省模拟题难度：来源：

It s unbelievable that so young a professor ______ make such great progress in the scientific field.[ ]
A. will
B. may
C. should
D. need

答案

举一反三

—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

题型：四川省同步题难度：| 查看答案

— 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

题型：四川省同步题难度：| 查看答案

— 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

题型：陕西省模拟题难度：| 查看答案

— 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

题型：四川省同步题难度：| 查看答案

—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

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