新概念2Lesson21被动语态答案
问题描述：
新概念2Lesson21被动语态答案
1.They will send you a bill at the end of the month.
2.We must look after young trees well.
3.You must correct your mistakes in your exercises.
4.Students must clean their classroom enery day.
5 You can't use a dictionary in the exam.
6.She will type the letters this afternoon.
答
1.A bill will be sent you at the end of the month.
2.Young trees must be looked after well.
3.Your mistakes must be corrected in your exercises.
4.Their classroom must be cleaned every day.
5.A dictionary can't be used in the exam.
6.The letters will be typed this afternoon.