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单项选择题

You can stay here ( ) you keep quiet.

A．as long as
B．unless
C．in case
D．in order

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热门试题

单项选择题There ( ) some mistakes in your composition.

A．have
B．has
C．seems to be
D．seem to be

单项选择题Mary and Jane are twin sisters. They look exactly ( ).

A．like
B．same
C．alike
D．same ones