It （）for ten days straight last December
A. snowed
B. was snowing
C. has snowed
D. had been snowing
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Sarah （）the laundry when Nick stopped by to say hello
A. was doing
B. had done
C. does
D. has done
The company （）a new digital camera next week
A. sold
B. sells
C. will be selling
D. was selling
I'm very busy () for the exam now. Will you come again at some other time.
A. to prepare
B. prepared
C. to be preparing
D. preparing
Jack cannot swim. You （）save him right now!
A. may
B. can
C. must
D. will
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