Bạn tham khảo: -_-

1.(12)We need clean air to live,but we are living and making our environment polluted.

2.(13)If we breathe the dirty air,we will have breathing problems and become ill.

3.(14)Plants and animals need clean air, too.

4.(15)Many thing in our life create the harmful gase and make the air dirty,like car,motorbikes and factories.

5.(16)Dirty air is called the polluted air.

6.(17)Air pollution also make the our Earth warmer .

7.(18)We need to reduce the air pollution by keep the environment around us green , clean and nice.

                      (Cái câu cả tháng trc :v)