2 

If we use fewer car,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.

7

If People travel more by public transport, the harmful gases in big cities will be reduced .

6

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

8

if we start at six , we will arrive there before noon.

9

if the boy eat so may green apples, he will be ill 

10

if we use reusable bags for shopping, we will reduce waste

cko mik câu hỏi hay nhất nha!

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

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

3.If we cycle to shool 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.

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 hamrful gases in big cities will be reduced.

8.If we didn't start at six, we wouldn't arrive there before noon.

9.If the boy eats so may green apples, he will be ill.

10.If we use reusable bags for shopping, we will reduce waste.