Combine the sentences using and or so that. Add a comma where necessary.

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

A. Mathew

B. Karim

C. Lin

D. Sarah

A. gets

B. getting

C. will get

D. won’t get

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.

A. If we will recycle more, we are able to protect the environment.

B. If we recycle more, we will be able to protect the environment.

C. If we recycle more, we are able to protecting the environment.

D. If we recycled more, we would protect the environment.

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 you threw garbage into rivers and lakes, you would make them dirty.

B. If you will throw garbage into rivers and lakes, you’ll make them dirty.

C. If you throw garbage into rivers and lakes, you’ll make them dirty.

D. If you throw garbage into rivers and lakes, you make them dirty.

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.