单项选择题

Had it not been for his help, I ______ the task within such a short time.

A. can't complete
B. couldn't complete
C. wouldn't complete
D. couldn't have completed
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单项选择题
I don't like the color of this T-shirt, ______, it's too tight for me.
A. beside
B. besides
C. except
D. except for
单项选择题
It's time to have class. We had better ______ and ______ to the teacher.
A. stop talking... listen
B. to stop talking... listen
C. stop talking... to listen
D. to stop talking... to listen
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