Look at the clouds, it looks as if it __rain（）
A. will
B. would
C. were
D. is going to
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I wish I __ how to translate this sentence（）
A. knew
B. know
C. have known
D. should know
The officer commanded （ordered ） the damaged brige__ before dawn（）
A. must be repaired
B. would be repaired
C. be repaired
D. should have been repaired
When a pencil is partly in a glass of water, it looks as though it____（）
A. breaks
B. has broken
C. were broken
D. has been broken
Most of the members requested that the meeting___ till after Friday（）
A. shouldn’t put off
B. not be put off
C. wouldn’t be put off
D. not put off
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