Steve is very strong and healthy. Strangely enough, he ____ have been infected b

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Steve is very strong and healthy. Strangely enough, he ____ have been infected by HINI virus.
A would B must C should D might

答案

解析

略

举一反三

---- We want someone to design the new art museum for us.
--- _______ the young fellow have a try.
A May B Shall C Will D Need

题型：不详难度：| 查看答案

. Mary_____ to college last year. Unluckily, she couldn’t take the examination because of a sudden disease.
A must have gone B can have gone C should have gone D could have gone

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Mr. White _________ at 8:30 for the meeting, but he didn’t show up.

A．should have arrived	B．should arrive
C．shouldn’t have had arrived	D．shouldn’t be arriving

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The street are all wet.It ___ during the night.

A．must be raining

B．must havge been rain

C．had to rain

D．must have rained

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---The computer cost him 20, 000 dollars. ---It ____ be that expensive.It’s a used computer.

A．may not

B．can’t

C．mustn’t

D．needn’t

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