单项选择题

She has a small machine for ______ coffee beans.

A．breaking
B．smashing
C．grinding
D．crushing
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单项选择题
It is recommended that the project ______ until all the preparations have been made.
A．is not started
B．will not be started
C．not be started
D．is not to be started
单项选择题
The manager of the hotel requests that their guests ______ after 11:00 p.m.
A．not to play loud music
B．shouldn"t play loud music
C．don"t play loud music
D．couldn"t play loud music
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