把下列句子改为被动语态

1 The boks were taken away by someone yesterday.
2 A sports meeting will be held by us in September.
3 The babies are taken care of by the nurse every day.
4 The piano is being repaired by a friend of mine now .

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答案：
1,The books were taken away by someone yesterday.
2, A sports meeting will be held by us in September.
3,The babies are taken care of by the nurse everyday.
4,The piano is being repaired by a friend of mine now.

望您采纳

THE BOOKS WERE TAKEN AWAY BY SOMEONE YESTERDAY
A SPORT M,EETING WILL BE HELD IN SEPTEMBER
THE BABIES ARE TAKEN CARE OF BY THE NURSE EVERY DAY
THE PIANO IS BEING REPAIRED BY A FRIEND OF MINE NOW