单项选择题

At the______ of the bell, the students rushed into the classroom.

A．sight
B．noise
C．voice
D．sound
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单项选择题
A．goB．to goC．wentD．goes
A．go
B．to go
C．went
D．goes
单项选择题
A．destroyingB．destroyC．destroyedD．to destroy
A．destroying
B．destroy
C．destroyed
D．to destroy
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