单项选择题

A．They extend their water pipes.
B．They give out faint cries.
C．They make noises to drive away insects.
D．They become elastic like rubber bands.
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单项选择题
A．Students from America.B．Students from England.C．Students from Australia.D．Students from Japan.
A．Students from America.
B．Students from England.
C．Students from Australia.
D．Students from Japan.
单项选择题
A．Left her staff as it is.B．Ask her staff to work until it is finished.C．Give her staff a deadline.D．Hold her staff back with their work.
A．Left her staff as it is.
B．Ask her staff to work until it is finished.
C．Give her staff a deadline.
D．Hold her staff back with their work.
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