Students mustn't _____ mobile phones at school

Students mustn't _____ mobile phones at school students mustn't----(stand)on the chair in the classroom 1.may i have a look at your letter?no,you___ a can’t b mustn’t 2.all the students in our class have different ____(able) 3.what can i do ___(help) my pet dog play games? students mustn't----(stand)on the chair in the classroom,适当地动词适当地动词 mustn't needn't 英语题目 the students shouldnt ___ ___ ___ ____同学之间不能相互吵架 the students shouldnt ___ ___ ___ ____ We mustn't get to school late==We must get to school____ ___. You mustn't take photos here unless you ___(allow) to.为什么? we mustn't talk to a driver when he ___(drive) You mustn't speak to your mother,___?反意疑问句怎么回答啊 We mustn't cook without ___ adult.A.a B.an C.two D./ You mustn't take photos here unless you ___(allow) to.为什么? We mustn't talk to a driver when he ___(drive) We mustn't do anything ___ the law.如题,一空 You mustn't riding fast,___ it may have an accident. or还是and? Milk bottles need cleaning thoroughly before they are used again,___ they?don't mustn't aren't That must be a mistake,___ it?A mustn't B can't C isn't 选什么,为什么? May I come in?No,you ___.A.mustn't B.needn't C.may not D.aren't