Tokeeptheaircleanthishospitalforb

发布时间：2020-07-25 14:30:23

To keep the air clean this hospital forbids all the patients ________ in and around itA.smokeB.smokingC.to be smokingD.smoked

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B解析forbid sb to do/forbid doing (doing 前可加逻辑主语all the patients )
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