=>
1. If we plant more trees, the air will be fresher.
2. If we use fewer cars, we will reduce pollution.
3. If we cycle to school every day, we will keep fitter.
4. If we use recycled products, we will save money.
5. If people throw rubbish into the right bin, they will keep the environment clean.
6. If we turn off the tap when brushing the teeth, we will save a lot of water.
7. If people travel more by public transport, the harmful gases in big cities will be reduced.

1.If we plant more trees, the air will be fresher. 

2.If we use fewer cars,  we will reduce pollution. 

3. If we cycle to school everyday,  we will keep fitter. 

4. If we use recycled products,  we will save money. 

5. If people throw rubbish into the right bin, they will keep the environment clean. 

6. If we turn off the tap when brushing the teeth,  we will save a lot of water. 

7.  If people more travel by public transports , the harmful gases in big cities will be reduced .