We mustn't talk to a driver when he ___(drive)

we mustn't talk to a driver when he ___(drive) We mustn't talk to a driver when he ___(drive) We ______ talk loudly in the library.A.must B.mustn't C.can D.can't We have to do our lessons first,___we?A.haven't B.don't C.won't D.mustn't mustn`t talk with you mouth full of food mustn`t start to eat before all the seniors arrive mustn`t go back home too late mustn`t lie mustn`t offend the old people whether she or he is a family member or not can't 和mustn't的用法?1.In Britain you ______ ride your bike on the pavement.A.can't B.mustn't2.We____forget to turn off the light before we leave.A.mustn't B.can't --Mr.john,we must hand in our homework today,_______?--No ,you ______.But you must bring it to school tomorrow.A needn't we ;mustn't B mustn't we needn't C mustn't you mustn't D needn't we need't但是这个题,第一个空,是反意疑问句,must的 --Mr.john,we must hand in our homework today,_______?--No ,you ______.But you must bring it to school tomorrow.A needn't we ;mustn't B mustn't we needn'tC mustn't you mustn't D needn't we need't we mustn't talk ____In the reading-room Aquite B loudly C quiet D quietly we mustn't talk ____In the reading-room Aquite B loudly C quiet D quietly We talk loudly when we see the sign on the right must mustn't need needn't 答案选mustn't ,谁可以帮解答 The boss has given everyone a holiday ,so we ()qo to work tomorrow .A.needn't B,mustn't we are not allowed to touch it,we touch it A mustn't Bmustn't to C haven't tO 选哪个为什么 We mustn't do anything _(harm) to animals we mustn't take any animals w_____ us to school we mustn't take any animais w____ us to school We （）tell her about it .She may have known it.A.don't have to B.mustn't We are not allowed to touch it.We__touch it A.mustn't B.mustn't to C.haven't to D.don't have to这句话中为什么不选C,选A,C错在哪里,怎样翻译.