It is necessary that a college student ______at least a foreign language. A．mas

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It is necessary that a college student ______at least a foreign language.

A．masters

B．should master

C．mastered

D．will master

答案

解析

略

举一反三

You ________ tell anybody else about it; this is a secret between us.

A．don’t

B．needn’t

C．mustn’t

D．won’t

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You’ll have plenty of time tomorrow, so you work too late tonight．

A．don’t have to

B．mustn’t

C．cannot

D．shouldn"t

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The doctor suggested he ______.

A．not smoke

B．don’ t smoke

C．doesn’t smoke

D．no smoke

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—I knocked but nobody answered the door.
----They _____asleep then and didn’t hear you.

A．must be

B．should be

C．must have been

D．should have been

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--- ____ Miss Ann stay out or be shown in , sir ?
---- Wait out a moment , please .

A．Does

B．Shall

C．May

D．Will

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