VIII. Combine each pair of sentences to form a conditional sentence, using " if"
* Câu điều kiện loại 2: là loại câu dùng khi miêu tả sự việc không có thật hoặc trái với sự thật trong hiện tại.
Cấu trúc: If + S + were/V-ed/V2, S + would + V-bare
1. If the land wasn't polluted, the farmers would be able to grow crops
2. If people didn't build too many telephone poles and overhead power line, there wouldn't be visual pollution
3. If people didn't use contaminated water for cooking, their health wouldn't be badly affected
4. If we didn't place dustbins in many places, people would be throw rubbish everywhere
