单项选择题

People always shake hands and say "How do you do" when______to each other.

A．introduced
B．introducing
C．introduce
D．to be introducing
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单项选择题
No harm______your health if you dream a little when you are sleeping.
A．does to
B．is done to
C．does for
D．is done for
单项选择题
The meeting was long and the speakers said______nothing worth listening to.
A．nearly
B．almost
C．mostly
D．possibly
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