用被动语态改写句子

题目

用被动语态改写句子
1 They will take care of your grangmother.
2 Mary has written 3 books.
3 She is washing your clothes.
4 They are painting the wall.
5 I am telling him how to be a good student.

答案

1 Your grandmother will be taken care of by them.
2 3 books has been written by Mary.
3 You clothes is being washed by her.
4 The wall is being painted by them.
5 He is being told by me to be a good student.