主动变被动 1.Where did you find the wallet?

题目

主动变被动 1.Where did you find the wallet?
2.People should save pandas .3.Mary's parents invited some friends to their home one evening.4.In the United States ,people usually grow rice in the south and wheat in the north.5.The Chinese government has passed some laws to stop the pollution.6.The boys will return the balls to the teacher.

答案

where were the wallet found?pandas should be saved by people.some friends were invited by Mary's parents to their home one evening.In the United States,rice in the south and wheat in the north are usu...