单项选择题

There was a second knock at the door. It was the second time I_____ that afternoon.

A．was interrupted
B．was interrupting
C．had 'interrupted
D．had been interrupted
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Although Helen is a new teacher, she knows ______ student in her class.
A．every of
B．every
C．all
D．all of
单项选择题
Nowhere else in the world______ more beautiful fight than in Switzerland.
A．you can fmd
B．is found
C．can you find
D．has been found
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