1. He used to make so many mistakes

 2. Tom was a good employee and worked hard.

- Tom used to be a good employee and work hard.

3. My friend drove very carelessly when he was young.

-> My friend used to drive very carelessly when he was young.

4. That woman doesn't live alone any longer.

-> That woman used to live alone

5. He is no longer a famous actor.

-> He used to be a famous actor

 6. All the meetings were held in the auditorium.

-> All the meetings used to be held in the auditorium.

  7. My father managed a small business in this city but doesn't any more.

-> My-father used to manage a small business in this city but doesn't any more.

8. Ben drank a lot of coffee but now he prefers tea.

-> Ben used to drink a lot of coffee 

9. There was a hotel opposite the station, but it closed a long time ago.

-> There used to be a hotel opposite the station

10. The city had many old buildings ten years ago.

->There used to have many old buildings ten years ago.

1. The Earth’s climate will be affected by the volcano.
2. Do you mind helping me put the chairs away?
3. There used to be a banyan here a few years ago, but now there isn’t.
4. Although Judy is severely disabled, she has never lost the will to live.
5. Some elderly people are not comfortable working on the computer.
6. What is the height of the wall?
7. It is the first time I have used a laptop.
8. In the hospital, they wake the patients at 6 a.m., which is much too early.
9. Your hair needs to be combed properly.
10. He gave me the information and I wrote it down at once.
11. Because of the terrible heat in the room, I turned on the fan.
12. She doesn’t feel like talking about it anymore.