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
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单项选择题
Can't you feel the table ______
A．move
B．moving
C．to move
D．to be moving
单项选择题
It was not until yesterday ______ me about it.
A．did he tell
B．that he didn't tell
C．when he told
D．that he told
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