填 mustn't,不能...表示禁止
You mustn't smoke when you see the sign.
当你看到那个标志的时候,你不能抽烟.
若有疑问及时追问,满意敬请采纳,O(∩_∩)O谢谢~~
You ()smoke when you see the sign.(needn't,mustn't)
You ()smoke when you see the sign.(needn't,mustn't)
英语人气:697 ℃时间:2020-04-05 15:01:20
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