来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/11/06 08:32:18
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?
Mr.and Mrs.Green 's room are cleaned by them once a week.
The cats are looked after carefully by Bill
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