It is hard for him to stop __________ though he has had a lot of diseases. A. smoke B. to smoking C....
2022-12-08 12:01:13 55次 2016届甘肃敦煌市九年级上学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is hard for him to stop __________ though he has had a lot of diseases.
A. smoke B. to smoking C. to smoke D. smoking
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