I cannot find my umbrella. I must have ______ it on the bus.
A. lost
B. forgotten
C. mislaid
D. left
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Paul just had ______.
A. cut his hair
B. his hair cut
C. cutting his hair
D. his hair cutting
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
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