单项选择题

It wasn't（）the tiger was caught and sent to the zoo.

A．before long
B．long before
C．long after
D．long when

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单项选择题

They were just going out（）it began to rain.

A．when
B．as
C．while
D．and

单项选择题

So much（）worry about her Son（）she can't sleep at night.

A．she does...that
B．does she...and
C．she does...and
D．does she...that

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