单项选择题

I think that these problems need ______ as quickly as possible.

A．to solve
B．to be solved
C．to be solving
D．solve
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单项选择题
I told the children to play ______ the sidewalk and not to go across the street.
A．against
B．at
C．in
D．on
单项选择题
I have been out very often lately, and so would rather ______ at home this week.
A．be stayed
B．to stay
C．staying
D．stay
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