单项选择题

It is high time that such practices ______

A．are ended
B．be ended
C．were ended
D．must be ended
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单项选择题
They are going to have the serviceman ______ an electric fan in the office tomorrow.
A．install
B．to install
C．to be installed
D．installed
单项选择题
John had been working hard and ______.
A．so had his brother
B．so his brother had
C．so was his brother
D．so his brother did
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