单项选择题

He ______ into the office building when the fire bell rang.

A．goes
B．has gone
C．was going
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单项选择题
— Excuse ______ , are ______ Miss Zhao— No, ______ am not.
A．me;you;I
B．me;your;I
C．I;you;my
单项选择题
Excuse me. May I have a piece of ______,please
A．water
B．knife
C．paper
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