Cấu trúc câu điều kiện loại 1: If+S+V, S+ modal verb( hiện tại) +V

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

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

43 If we cycle to school everyday, we will keep fitter

44 If we use recycled products, we will save money

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

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

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

48. If we start at 6:00, we will arrive there before noon

49 If the boy eats so much green apples, he will be ill.( câu này bị đánh sai chữ 'may' nha bạn)

50. If we will reusable bags for shopping, we will reduce watse.

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.

If People  throw rubbish into the right bin, they will keep the environment clean

6.ifWe  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

8. If We  start at six We will  arrive there before noon.

5. People  throw rubbish into the right bin. They  keep the environment clean.

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

6. We  turn off the tap when brushing the teeth. We  save a lot of water.

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

7. People  travel more by public transport. The harmful gases in big cities will be reduced.

If People  travel more by public transport, The harmful will gas in big cities will be reduced