单项选择题

You'd better ______ your computer before we use it again.

A．
A. see

B．
B. check

C．
C. begin

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I ______ the picture from the wall in order to clean it.
A．
A. set up

B．
B. took down

C．
C. looked at
单项选择题
______ are in Class 2.
A．
A. You and I

B．
B. I and you

C．
C. You and me
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