题目内容
-How do you feel about the air pollution?
-So heavy.It's hard ________ in cars.
- A.stop riding
- B.to stop to ride
- C.to stop riding
- D.to stop rideing
C
动词不定式是真正的主语。“停止做某事”应为stop doing sth.。
动词不定式是真正的主语。“停止做某事”应为stop doing sth.。
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