Doctors say that exercise is important for health, but it be regular exercise. A．canB．willC．mustD．may 题目和参考答案——青夏教育精英家教网—

题目内容

Doctors say that exercise is important for health, but it _______ be regular exercise.

A．can

B．will

C．must

D．may

试题分析：考查情态动词：A. can能 B. will将会C. must 必须D. may可以，句意：医生说，锻炼对健康很重要，但一定要是定期锻炼。选C。
点评：情态动词的词义辨析要记清基本含义和一些特殊的用法，做题时要放在上下文语境中进行，特别注意说话人的语气。

练习册系列答案

A．can have got; might have done

B．could have got; would have done

C．should have done; would

D．must get; might have done

I didn’t see your sister at the meeting. If she __________, she would have met my brother.

— Mary’s sister looks very beautiful now.
— But she was very ugly before she tidied up her appearance（整容）. You _________ believe it!

I wonder if this is the computer you want______ .

A．to have repaired

B．to have it repaired

C．it to be repaired

D．to repair it

---The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?
---____ my students have a try?

The old lady insisted that her daughter ____ still alive and that she ____ at once.

A．was; was operated	B．was; be operated
C．should be; should be operated	D．be; should be operated

—Pity you missed the lecture on nuclear pollution.
—I _____it, but I was busy preparing for a job interview.

A．attended	B．had attended
C．would attend	D．would have attended

He insisted that the doctor at once.

A．be sent for	B．was sent for
C．was going to be sent for	D．must be sent for

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