用must,mustn't造句1.do your homework before you go to bed 2.listen carefully in class 3.drive fast/on the street 4.talk/in class class rules 的适合规则有什么?sports games rules 的规则有什么?

问题描述:

用must,mustn't造句1.do your homework before you go to bed 2.listen carefully in class 3.drive fast/on the street 4.talk/in class
class rules 的适合规则有什么?
sports games rules 的规则有什么?

1.you must do your homework before you go to bed.2.you must listen carefully in class.3.you mustn't drive fast on the street.4.you mustn't talk in class.