把下列句子改为被动语态.

题目

把下列句子改为被动语态.
1.My brother does not require nets to catch fish.
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2.I removed the fish from the birds' mouths.
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3.Mr Yang pushed the bird into the water.
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4.We should finish our homework on time.
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5.She takes the medicine twice a day.
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答案

1.Nets are not required to catch fish (by my brother).
2.The fish was remved from the birds' mouths (by me).
3.The bird was pushed into the water (by Mr yang).
4.Our homework should be finished on time (by us).
5,The medicine is taken twice a day(by her).