Question

【题目】We have only one earth. We should ____ and take actions to protect it.
A.stop to pollute
B.stop polluting
C.to stop to pollute
D.to stop polluting

Answer 1

【答案】B
【解析】句意：我们只有一个地球。我们应该停止污染，采取措施来保护它。stop to do sth.：停下来去做另一件事（两件事）；stop doing sth.：停止做某事（一件事）。结合句意可知选B。