People plant trees near the river.的被动语态怎么变

Why should people plant trees? people often plant trees in winter Why should people plant trees?的回答 People plant hundreds of trees every year 改为被动语态 when do people often plant trees?改为被动语态 变成被动语态 People plant trees every spring plant the trees还是plant trees we plant trees every 用plant trees造句 plant the most trees we plant trees every we plant trees every people plant more and more trees to protect the earth该被动 People will plant more trees in the city after a month这句子错在哪? People plant trees near the river.的被动语态怎么变 People must plant trees to prevent sandstorm_____ A from happening B to happen C happen Why do people plant trees every year?——(keep) our air clean i will people trees对画线部分提问,画线people treesWE WILL GO SHOPPING改为否定句.please come here改为否定句是的打错了。i will plant trees对画线部分提问，画线plant trees