"Listen carefully", he said to us.

A. If you did not water these plants, they will die.

B. If you water these plants, they will die.

C. If you don’t water these plants, they will die.

D. If you are watering these plants, they will die.

A. Ann said don't wait for her if she was late.

B. Ann said not to wait for me if I was late.

C. Ann said not to wait for her if she was late.

D. Ann said don't wait for me if I'm late.

A. Unless she lives far from school, she wouldn’t go to school late.

B. Unless she lived far from school, she would go to school late.

C. If she lived far from school, she wouldn’t go to school late.

D. If she didn’t live far from school, she wouldn’t go to school late.

A. Ann asked to open the door for her, Tom.

B. Ann asked Tom to open the door for her.

C. Ann asked Tom open the door for her.

D. Ann asked Tom to open the door for me.

A. If he were not short, he could play basketball.

B. If he is not short, he could play basketball.

C. If he were not short, he will play basketball.

D. If he were short, he could play basketball.

A. You saw the smoke which comes from the hills.

B. You saw smoke which came from the hills.

C. You saw the smoke that came from the hills.

D. You saw the smoke came from the hills.