单项选择题

There were dirty marks on her trousers ______ she had wiped her hands.

A．where
B．when
C．that
D．what
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单项选择题
Have you (noticed) her coat (is wet) She (must be) caught (in) the rain.
A．noticed
B．is wet
C．must be
D．in
单项选择题
After the new technique was introduced, the factory produced ______ cars in 2002 as the year before.
A．as many twice
B．as twice many
C．twice many as
D．twice as many
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