plant_____ trees on the mountain every year.

plant_____ trees on the mountain every year. the farmers plant trees on the farn every year The family plants t_________of trees 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 （ ）Twenty more trees will be planted on the mountain. They are going to____(plant) trees on the mountain tomorrow. ________ 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. every year we plant -------- trees How many trees are there on top of the mountain?这里的on top of