you mustn't be silly and drive without wearing a seat belt.什么意思

You mustn't be silly中文是什么意思 you mustn't be silly and drive without wearing a seat belt.什么意思 You mustn't is silly.我的练习册上有, 这道填空怎么填：You mustn't (两个字母）silly.You must eat. Don’t be silly和Do you understand是什么意思 silly silly you let`s be forever don't be silly baby Don't be silly chumps.的意思 Don't be silly 用于哪些场合? Hey!Don't be silly.wise up! Don’t be silly翻译下 Don't be silly,of course remember 1 You ( c )cross the road when the traffic lights are redA can B must C mustn't D needn't2Jimmy is coming to Beijing by plane .I 'll meet him ( b )the airport tomorrow.A on B at C off D for3 I won't make such a silly mistake again.I'll be ( c )next t You ___be here.it will be dangerous.A.mustn't B.should't选择AorB You mustn’t go to school if you ________（be）still in bed. You mustn't be late for school.= You must ( )( )( ) for school. don't be silly.帮分析一下句子成分don't be silly!没有主语? You must be hungry,____?A.are you B.mustn't you C.must youD.aren't you