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
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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
He is the manager of the Human Resources Department ______ I must talk to.
A. what
B. which
C. whom
D. where
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