问题
选择题
The sand in the river is increasing these years. We must to protect
the environment.
A．take measures
B．do some work
C．do something
D．make some rules
答案
答案：A
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The sand in the river is increasing these years. We must to protect
the environment.
A．take measures
B．do some work
C．do something
D．make some rules
答案：A
