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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单项选择题
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
-- Never thought to see you here. --().

A．So did I.
B．Oh, haven't you
C．It's a small world.
D．I'm well. Thank you. And you
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