单项选择题

As it turned out to be a small house party, we ________so formally.

A．need not have dressed up
B．must not have dressed up
C．did not need to dress up
D．must not dress up

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单项选择题

Western Nebraska generally receives less snow than ________ Eastern Nebraska.

A．in
B．it receives in
C．does
D．it does in

单项选择题

In international matches, prestige is so important that the only thing that matters is to avoid ______.

A．from being beaten
B．being beaten
C．beating
D．to be beaten

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