1.Don't throw plastic bags because you can reuse it.
2.If water is polluted, fishes will die.
3.If you turn off tep when you brush your teeth, you will save water.
4.If we plant trees, the air will be fresher.
5.You must turn off lights before leaving room.
6.We should use useable bags instead of plastic bags.
7.If we go to school by bus, we can reduce air pollution.
8.If we use pesticides indiscriminately, water pollution will be worse.
9.We believe that she will recover from illness soon.
10.Robots help us look after the children when we are away.
