Shall we have a smoke here?—No,we__,because the workers is carrying some petrol.这里为什不用can't为什么用mustn‘t？？

shall we have a competition? ( ))shall we have a pcnic shall we ______(have)a picnic tomorrow shall we _____(have) a picnic tomorrow a picnic shall we when have shall we have a rest?和 let's have a rest,shall we?有无区别? picnic,we,have,afternoon,shall,tomorrow,a(?)怎样排序 ——?—— shall we have a picnic? Let's have a picnic,shall we?Yes,_____. Shall we go to have a swim?等于什么 We shall have to make a c_ in our plan? Let's have a c_ in English,shall we? 用a,have,milk,shall,glass,of,we造句 ____ shall we have a pencil?Next week. Let's have a talk,shall we?的回答 连词成句shall,a,let's,we,discuss,have where shall we have lunch? 英文：Shall we have dinner