1. People don't care much about environment, so they keep making it worse. => If people.... 2. She suffered from a serious disease because of drinking contaminated water in a long time. => Since... 3. The drainage system is damaged. There is not enough water for the crop. => If the drainage system... 4. "Why don't you turn off more lights in the house to reduce your eyestrain?" => If I... 5. The improvements of the public transport system will encourage more people to use it. => If...

1. If people cared much about enviroment, they wouldn't keep making worse.

2. Since she drank contaminated water in a long time, she suffered from a serious disease.

3. If the drainage system weren't damaged, there would be enough water for the cop.

4. If I were you, I would turn off more lights in the house to reduce my eyestrain.

5. If the improvements of the public transport system encourage more people, they will use it.

1.If people cared much about environment,they wouldn't keep making it worse.(if 2)

2.Since she drank contaminated water in a long time,she suffered from a serious disease.(since+clause:bởi vì)

3.If the drainage system weren't damaged,there would be enough water for the crop.(if 2)

4.If I were you,I would turn off more lights in the house to reduce my eyestrain.(if 20

5.If the improvements of the public transport system encourage more people,they will use it.(if 1)