单项选择题

You must remember ______ this book to the library tomorrow.

A．having returning
B．return
C．to return
D．to returning
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单项选择题
A wise and frugal government shall ______ men from injuring one another.
A．refrain
B．restrain
C．abstain
D．restrict
单项选择题
The city is undergoing such tremendous development that new buildings are going ______ everywhere everyday.
A．by
B．beyond
C．down
D．up
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