As we all know, smoking people’s health.A. is harmful toB. do harm foC. does harmful toD.

发布时间：2020-08-17 03:17:50

As we all know, smoking      people’s health.
A. is harmful to
B. do harm fo
C. does harmful to
D. harm

网友回答

(答案→)A. is harmful to
B. do harm fo
C. does harmful to
D. harm
解析：考查词组和主谓一致：对…有害：be harmful to或do harm to或用harm sth，所以先排除C项，当主语是动名词的时候，谓语是单数，选A。
以上问题属网友观点，不代表本站立场，仅供参考！