单项选择题

The machine which we bought from the United States several years ago needed.

A．being repaired
B．to repair
C．repaired
D．to be repaired
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单项选择题
All of a sudden, we saw the aircraft ______ and burst into flames.
A．crash
B．fall
C．drop
D．break
单项选择题
Can't you feel the table ______
A．move
B．moving
C．to move
D．to be moving
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