变被动语态 My father bought me a bike yesterday.This morning the

A bike was bought for me (bu my father) yesterday。A letter was deliered by the postman this morning。A naw subway door is being built by the workers。The thief was caught by the police。The boy has been put punished by the headmaster。The cake was made by my sister。()内的表示可以省略多谢!楼上第4题错了。