1.The water is polluted. The fish are dead ( because of ). ………………………………………………………………………… 2. Global warning happens. There is too much carbon dioxide in the atmosphere (cause) ……………………………………………………………………………………….. 3.Ships spill oil in oceans and rivers. Many aquatic animals and plants die.. ( lead to). …………………………………………………………………………………….. 4.Students are more aware of protecting the environments. Teachers teach environmental Issues at school. If ………………………………………………………………………………… ………………………………………………………………………………………… 5.She has a headache after work everyday. She works in a noisy office If ………………………………………………………………………………………….. 6.Vy had a stomachache. She ate a big dinner.( since). …………………………………………………………………………………………. 7. People throw rubbish in the streets. The streets doesn’t look attractive. If ,……………………………………………………………………………………..

1. Because of the polluted water, the fish are dead.

2. Global warning happens cause there is too much carbon dioxide in the atmosphere.

3. Ships which pill oil in oceans and rivers lead to the death of many aquatic animals and plants.

4. If teachers didn't teach environmental issues at school, students wouldn't be more aware of protecting the environments. 

5. If she didn't work in a noisy office, she wouldn't have a headache after work everyday. 

6. Vy had a stomachache since she ate a big dinner.

7. If people didn't throw rubbish in the streets, the streets would look attractive.

1. Because of the polluted water, the fish are dead.

2. Global warning happens cause there is too much carbon dioxide in the atmosphere.

3. Ships which pill oil in oceans and rivers leads to the death of many aquatic animals and plants.

4. If teachers didn't teach environmental issues at school, students wouldn't be more aware of protecting the environments. 

5. If she didn't work in a noisy office, she wouldn't have a headache after work everyday. 

6. Vy had a stomachache since she ate a big dinner.