单项选择题

— Has Jack finished his homework yet
— I have no idea; he ______ it this morning.

A. was doing
B. had been doing
C. has done
D. did
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______ all over the hill and around the lake are wild flowers of different kinds.
A. To grow
B. Growing
C. Grown
D. Grow
单项选择题
I wish that I ______ with you last night.
A. went
B. could go
C. have gone
D. could have gone
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