单项选择题

Every means ______ tried but without much success.

A．have been
B．has been
C．will be
D．are being
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单项选择题
She could hardly wait to go to the beach ______
A．couldn't she
B．didn't she
C．could she
D．did she
单项选择题
You many keep the car ______ you need it.
A．as far as
B．as good as
C．as long as
D．as well as
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