单项选择题

They have worked in this workshop ______ ten years.

A．since
B．after
C．for
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单项选择题
The Greens ______ come to your party tomorrow.
A．is able to
B．can be able to
C．will be able to
单项选择题
Hurry up, or you will ______ the train.
A．lose
B．miss
C．forget
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