八年级第二学期牛津上海版英语练习部分答案第8页答案

快 !!速度!!

They are the best fighters against pollution. However, trees are in great danger nowadays. People cut down millions of trees every year. People should plant more trees.

Look! The students in the picture are planting trees on some empty land near their school. The boys are digging holes in the ground. The girls are putting trees in the holes. It is very hot but they are working very hard. The area used to be ugly before. Now with the trees it looks greener and more beautiful.

I hope other people will take care of the trees and plant more trees. Trees are really our best friends.
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