谁可以帮我转换以下的句子为Passive Voice?

题目

谁可以帮我转换以下的句子为Passive Voice?
1' We all chose Tom as our head.2' The people make history.3' Everyone calls this thing MP4.4' Bell invented the telephone in 1876.5' He met his wife at the airprt himself.6' Miss Smith sent the letter last week.7' She cleans the house every week.

答案

1 Tom was chose to be our head by all of us
2 History is made by people
3This thing is called MP4
4the telephone was invented by Bell in 1876
5 His wife was met by him at the airport
6 The letter was sent by Miss Smith last week.
7The house is cleaned by her every week