My bicycle is nowhere to be found. Who ___ have been using it?A．shouldB．must C．c

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My bicycle is nowhere to be found. Who ___ have been using it?

A．should

B．must

C．could

D．might

答案

解析

略

举一反三

It is required that each of the students chosen _____ good preparations ahead of time.

A．has to make

B．will make

C．should make

D．must make

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PART TWO LANGAGE KNOWLEDGE SECTION A
Directions: Beneath each of the following sentences are 4 choices marked A, B9 C and D. Choose the answer that best completes the sentence.
It is reported that in the next few years the earth________possibly be hit by more extreme weather like storms.
A. would B. may C. could D. should

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______I be free tomorrow，I could go with you．

A．Could

B．Should

C．Might

D．Must

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I ______ her, but I never could.

A．ought to help

B．must help

C．must have helped

D．ought to have helped

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If you are caught driving after drinking, the fine be paid in cash according to the traffic rules.

A．shall

B．will

C．must

D．should

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