I watered fiowers yesterday 改为被动语态

I watered fiowers yesterday 改为被动语态 把下面的句子改为被动语态：1.He watered the flower yesterday.2.He will wat I watered fiowers yesterday BingXin wrote the story I eat tw I left my bag in the library yesterday.改为被动语态 I looked after my little brother yesterday afternoon .改为被动语态 I can play baseball 改为被动语态 I saw him dancing.改为被动语态 I lost my mind改为被动语态 I heard him singing改为被动语态 my mother bought a microwave oven yesterday 改为被动语态 We ate some bread yesterday 改为被动语态 They played games yesterday.改为被动语态怎么改?