from ; means ; in ; waste ; possible ; wind ; should ; green ; However ; who

The earth is our home. We ....SHOULD.. take care of it, for ourselves, and for our children and grandchildren. This ....WASTE... we have to keep our environment ..GREEN... and clean . The importance of this task is pointed out by ecologists - the scientists ...WHO.... study the relations between living things and the environment. ...HOWEVER..., each of us must do everything .....POSSIBLE. to keep the land, air and water clean.

nhanh như tia chớp mà, thấy bài dễ là chớp ngay mà

1. A peaceful B. beautiful C. noise D. delicious

2. A. Africa B. Sweden C. America D. Asia