Combine the sentences using First Conditional. Add a comma where necessary.

Don’t throw garbage into rivers and lakes. You’ll make them dirty.

A. Mathew

B. Karim

C. Lin

D. Sarah

A. gets

B. getting

C. will get

D. won’t get

A. If we don’t control overfishing, it will damage marine life.

B. If we won’t control overfishing, it damages marine life.

C. If we don’t control overfishing, it damages marine life.

D. If we controlled overfishing, it would not damage marine life.

A. If we don’t stop polluting the environment, we’ll get more health problems.

B. If we won’t stop polluting the environment, we get more health problems.

C. If we don’t stop polluting the environment, we get more health problems.

D. If we didn’t stop polluting the environment, we would get more health problems.

A. If we stopped water pollution, we had enough food and water.

B. If we don’t stop water pollution, we don’t have enough food and water.

C. If we won’t stop water pollution, we won’t have enough food and water.

D. If we don’t stop water pollution, we won’t have enough food and water.

A. People should take quick showers and they won’t waste water.

B. People should take quick showers so that they won’t waste water.

C. People should take quick showers or they won’t waste water.

D. People take quick showers, so that they won’t waste water.

A. People should learn how to recycle things and they can reduce land pollution.

B. People should learn how to recycle things, or they can reduce land pollution.

C. People should learn how to recycle things so that they can reduce land pollution.

D. People learn to recycle things, and they reduce land pollution.