单项选择题

A) to put C) putting
B) to be put D) put

A．to put
B．to be put
C．putting
D．put
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单项选择题
A) do C) is B) does D) are
A．do
B．does
C．is
D．are
单项选择题
A) change C) communicate B) achieve D) remain
A．change
B．achieve
C．communicate
D．remain
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