A. I have recently seen him.

B. I haven't seen him for ten years.

C. The last time I saw him was last year,

D. I am going to meet him in ten years' time.

A. This pencil is used to draw thick lines.

B. This pencil is used to drawing thick lines.

C. Thick lines used to be drawn with this pencil.

D. Thick times are used to being drawn by this pencil.

A. He told her that he will help her when she needs me.

B. He said that he would help you when she needed him.

C. He promised that he would help her when she needed him.

D. He asked her whether she would help him when he needed her.

A. If he could swim, he would have more time every day.

B. If he had more time, he would go swimming every day.

C. He says that he has more time to go swimming every day.

D. He is pleased that he has more time to go swimming every day.

A. After he turned off all the devices to save electricity, he left there.

B. He left the room without turning off all the devices to save electricity.

C. He left the room although he did not turn off all the devices to save electricity.

D. Because he was in the right room, he turned off all the devices to save electricity.