To keep the air clean, this hospital _____ all the patients ____ in and around it.A.allows; smokingB.forbids; to smokeC.prevents; smokeD.prohibits; smoke
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B解析试题分析：考查固定词组。固定词组forbid sb to do sth禁止某人做某事； ACD的搭配错误或者与句意不符的。句意：为了保持空气清洁，这家医院禁止病人在内外抽烟。故B正确。考点：考查固定词组点评：固定词组forbid sb to do sth禁止某人做某事；