题目

把下面两个句子改成被动态
1.Mr.and Mrs.Green clean their room once a week.
2.Bill looks after the cats carefully.
另外,water的过去分词形式是什么?

提问时间：2021-01-06

答案

Mr.and Mrs.Green 's room are cleaned by them once a week.
The cats are looked after carefully by Bill