单项选择题

I am very sorry for ______ for so long.

A．keep you waiting
B．having kept you waiting
C．waiting for you
D．keep you wait
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单项选择题
Not until I reminded him for the third time ______ working and looked up.
A．that he stopped
B．does he stopped
C．did he stop
D．that he stop
单项选择题
The police were given an order that the stolen documents must be recovered at all ______.
A．accounts
B．conditions
C．payments
D．costs
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