You_____ be tired－you’ve only been working for an hour.[ ]A. must not

题型：陕西省模拟题难度：来源：

You_____ be tired－you’ve only been working for an hour.[     ]
A. must not
B. won’t
C. may not
D. can’t

答案

举一反三

—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
—Oh, dear! She ________ a lot of difficulties![ ]
A. may go through
B. might go through
C. ought to have gone through
D. must have gone through

题型：四川省同步题难度：| 查看答案

I can"t understand why you all ________ think that I did it. [     ]
A. shall
B. will
C. can
D. should

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—_____ you always question everything I say?
—Sorry if I make you unhappy; but it"s my habit to question before I believe.  [     ]
A. Shall
B. Will
C. Must
D. Can

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

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—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

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