many trees --- along the streets every year so the air is ve

With so many trees around,the air in the town is f______ now You can see the( ) green trees along the streets.A.city B.ci The family plants t_________of trees every year. plant_____ trees on the mountain every year. 句型转换11.Every year the farmers plant many trees on those hill .Every year the farmers plant many trees on those hills（改为被动 英语填空：The air in the seaside is ( ).so many people from the c the farmers plant trees on the farn every year We can see many trees on each side of the streets.改为被动语态 ________ trees are cut down in the forests every year. The students plant two hundreds trees every year.改错 The trees ()(use) to build some houses every year.