单项选择题

This is the first time that your brother has been to China, ______

A．isn't it
B．isn't he
C．hasn't he
D．isn't this
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单项选择题
The road ______ I drive to work is always crowded.
A．which
B．on that
C．that
D．on which
单项选择题
It is requested that every student ______ a paper on campus life.
A．writes
B．wrote
C．writing
D．write
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