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

Overfishing will damage marine life. We need to control it.

A. Mathew

B. Karim

C. Lin

D. Sarah

A. gets

B. getting

C. will get

D. won’t get

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.

A. People should recycle plastic bottles and reuse glass bottles.

B. People should recycle plastic bottles so that reuse glass bottles.

C. People should recycle plastic bottles, or reuse glass bottles.

D. People recycle plastic bottles and glass bottles.

A. We shouldn’t throw trash into rivers and lakes, so that we help clean the environment.

B. We shouldn’t throw trash into rivers and lakes or help clean up the environment.

C. We shouldn’t throw trash into rivers and lakes, and we should help clean up the environment.

D. We shouldn’t throw trash into rivers and lakes so that help the environment.

A. We should turn off air conditioners when we leave a room, so that we can save electricity.

B. We should turn off air conditioners when we leave a room and we can saving electricity.

C. We turn off air conditioners when we leave, so that we save electricity.

D. We should turn off air conditioners, so we can saving electricity.