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
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
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