People must plant trees to prevent sandstorm_____ A from happening B to happen C happen

People must plant trees to prevent sandstorm_____ A from happening B to happen C happen Why should people plant trees? TR people often plant trees in winter Why should people plant trees?的回答 Each people all must plant plant we must plant more trees to ____ our planet greener. 请翻译谚语Friendship is a plant we must water. we must plant these trees 改成一般疑问句 I must plant more trees 如何改为否定句 People use water ( )vegetables.a.to grow b.grow c.to plant d.plant People,must rely on themselves! People cleaned the water up in a sewage plant.英语翻译 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