单项选择题

I think (that) the day (will) finally come (that) air pollution can be put (C) control.

A．that
B．will
C．that
D．under
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单项选择题
All things (had) been canceled (because) of the snowstorm, many passengers could do (nothing) but (take) the train.
A．had
B．because
C．nothing
D．take
单项选择题
The clothes a person wears may express his ______ or social position.
A．curiosity
B．status
C．determination
D．significance
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