题目内容

She was undecided about ______ his offer.

A. whether should she accept
B. if should she accept
C. whether she should accept
D. what she should accept

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The streets are all wet. It ______ during the night.

A. must be raining
B. must have been rained
C. had to rain
D. must have rained

You ______ this book. You can borrow it from the library.

A. needn"t have bought
B. could have bought
C. need have bought
D. must have bought

Here is a paper ______ for you to dry your hands.

A. town
B. tour
C. tower
D. towel

A technician, together with some young workers, ______ working on the design.

A. is
B. are
C. has
D. have

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