单项选择题

There is a real possibility that these animals could be frightened, ______ a sudden loud noise.

A．being there
B．should there be
C．there was
D．there have been
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单项选择题
If you ______ the bottle and cigarettes, you'll be much healthier.
A．take off
B．keep off
C．get off
D．set off
单项选择题
When we got there, what were left behind ______ empty bottles.
A．just
B．only
C．were
D．was
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