don not at once after down lie bed on meals连词成句

英语连词成句don not,at,once,after,down,lie,bed,in,meals don not at once after down lie bed on meals连词成句 wht not 和why don't有区别吗?why____ we start at once 是不是两个都可以填？ Let the boy --------[not leave】at once. Don't worry.I ____(come) at once. at once at once not at all.i don' care Don not be mad at me Look!How heavy the rain is!You’d better ______.A.don’t go now B.stay here when it stops C.not leave until it stops D.not to leave at once为什么是C我觉得都对 Look!How heavy the rain is!You’d better ________.A.don’t nowB.stay here when it rainsC.not leave until it stopsD.not to leave at once求解为什么CD不对? don`t all speak at once,one at a time.啥意思? 请问大家Do not all speak at once!One at a time,please.如何翻译啊? don't at once after down lie bed on meals(连词成句) don't,at,once,after,down,lie,bed,on,meals连词成句 why don't you improve you English at once?同义句转换 英语3.Don’t all speak at once!________,please.3.Don’t all speak at once!________,please.a.Each at one time b.One by one time c.One for each time d.One at a time为什么 They don't have to finish the work at once.(改成同意句)They _______ _______ to finish work at once.