单项选择题

Wash your hands ______ you eat something.

A. as

B. before
C. when
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单项选择题
There ______ any orange in the bottle.
A. aren’t

B. are
C. isn’t
单项选择题
What does the woman mean
[A] She agrees with the man.
[B] She is surprised.
[C] She doesn’t think so.
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