I lived with my sister this summer and didn"t have to pay rent. So I ______ save

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I lived with my sister this summer and didn"t have to pay rent. So I ______ save most of my salary.

A．could

B．would

C．was able to

D．should

答案

解析

略

举一反三

－Mary didn’t turn up last time, did she?
－No. She ______ . We had changed our plan.

A．shouldn’t have come	B．needn’t have to come
C．didn’t need to come	D．needn’t have come

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. I ______ pay Tom a visit, but I am not sure whether I will have time this Sunday.

A．should

B．might

C．would

D．could

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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

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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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