Viết lại câu cho phù hợp

----- Nội dung dịch tự động từ ảnh -----
1. Mr Quang works in a noisy environment. His hearing becomes worse.
-> If ...
2. I can't understand him because he speaks so quickly.
-> If he
3. John lives in the area affected by air pollution, so he has breathing problems.
=> If ......
4. The soil is poisoned because farmers use too many pesticides and herbicides.
=> If ... .
.... ...
5. People don't care much about environment, so they keep making it worse.
If people
6. We don't waste paper. We save many trees.
-> If