单项选择题

Where are you I _______ for you here for ages!

A．waited
B．was waiting
C．had waited
D．have been waiting
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单项选择题
They _______ gave us a presentation.
A．every
B．everyone
C．each
D．each one
单项选择题
Contact me at once _______ any problem.
A．you should have
B．have you
C．should you have
D．you have
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