It'sourdutynotto________theenvironment.（）A．polluteB．useC．putD．polluting_刷题宝

题干

It's our duty not to ________ the environment. （）

A．pollute

B．use

C．put

D．polluting

上一题下一题 0.99难度选择题更新时间:2020-03-31 09:15:04

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