the river is dangerous.you ___ swim in it .A.can't B.mustn't C.co_英语解答

the river is dangerous.you ___ swim in it .A.can't B.mustn't C.couldn't D.needn't

人气：181 ℃　时间：2019-12-07 07:15:32

解答

选择B,因为mustn't表示的是禁止,河是危险的,所以是禁止,表示命令