单项选择题

I first met Mary three years ago when we ______ in a middle school together.

A．have worked

B．had been working
C．were working

D．had worked
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单项选择题
She thought I was talking about her son ______ actually, I was talking about my son.
A．whom
B．where
C．which
D．while
单项选择题
What’s wrong with the man’s old car
A．It looks ugly.
B．It can’t go fast.
C．There are something wrong with the engine and wheels.
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