Factories must stop ____the environment.A.polluting B.to pollute C.pollute D.to polluting
问题描述：
Factories must stop ____the environment.
A.polluting B.to pollute C.pollute D.to polluting
答
Environment Problems Environmental problemsmust receive the education about
答
to pollute
答
选择的是A
答
A. polluting : stop doing sth:停止做么事;停止污染环境
B.to pollute: stop to do sth:放下正在做的事而去做另外的事，从语意上来讲，此答案是错误的。
C，D语法中无此搭配。所以正确答案为A
答
A.polluting stop doing停止做某事 停止污染环境