用must和mustn`t个造4句话
问题描述：
用must和mustn`t个造4句话
2月19之前就要
答
must1.You must get up early.2.You must listen to the teacher carefully.3.You must work hard.4.You must do your homework.5.You must get to school on time.mustn'tYou mustn't get up late.You mustn't talk...