单项选择题

He had hardly left the building （） the bomb exploded.

A. than
B. before
C. when
D. after

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单项选择题

I would rather you （） this to him yourself. When I tried to speak to him last time, he didn’t listen.

A. say
B. will say
C. said
D. would say

单项选择题

This plan probably won’t work either—but you must do （） to help her.

A. a thing
B. something
C. things
D. nothing

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