单项选择题

It is you ______ our real friend.

A．that is
B．which is
C．who is
D．who are
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单项选择题
The brake doesn't work. It needs ______.
A．repaired
B．be repairing
C．to be repaired
D．to repairment
单项选择题
So seriously ______ in the accident that be is still in danger.
A．he did injure
B．did he injure
C．was he injured
D．he was injured
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