To keep the air clean this hospital forbids all the patients in and around it.A. smokeB.

发布时间：2020-08-16 09:38:35


To keep the air clean this hospital forbids all the patients      in and around it.
A. smoke
B. smoking
C. to be smoking
D. smoked

网友回答

A. smoke
(答案→)B. smoking
C. to be smoking
D. smoked
解析：forbid sb to do/forbid doing (doing 前可加逻辑主语all the patients )
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