1. They haven't visited me for five years.
2. Be careful not to fall.
3. The man spoke too fast.
4. When did you buy this car?
5. We started learning English four years ago.
6. The book which was bought last night is interesting.
7. If they don't take a map, they can lose their way.
8. You shouldn't cut the flowers in this garden.
9. I haven't seen her for a long time.
10. He said to me that he must finish these works on time.
11. The man spoke so fast that almost nobody understood what he said.
12. Why do you keep on looking at me like that?
13. I'd rather you didn't drive so fast.
14. However hard she works, she never seems to succeed.
15. You don't need to wear a uniform.
16. You needn't have gone to so much trouble on my behalf.
17. I remember them taking me to a training camp forest.
18. She admitted to taking the necklace.
19. Paul didn't leave the room without saying a word.
20. The film was so boring that we left before the end.

1. They last visited me five years ago.
They haven't visited me for five years.

2. You might fall if you're not careful.
Be careful, or you might fall.

3. The man spoke very fast. Almost nobody understood what he said.
The man spoke too fast for almost nobody to understand what he said.

4. How long have you bought this car?
When did you buy this car?

5. We have learnt English for four years.
We started learning English four years ago.

6. The book is interesting. It was bought last night.
The book which was bought last night is interesting.

7. They don't take a map, so they can lose their way.
If they don't take a map, they can lose their way.

8. The flowers shouldn't be cut in this garden.
You shouldn't cut the flowers in this garden.

9. I haven't seen her for a long time.
I didn't see her for a long time. (Note: This sentence may need clarification; a better rewrite could be: "I haven't seen her in a long time.")

10. He said to me: 'I must finish these works on time.'
He said to me that he must finish these works on time.

11. The man spoke very fast. Almost nobody understood what he said.
The man spoke so fast that almost nobody understood what he said.

12. Why do you continue to look at me like that?
Why do you keep on looking at me like that?

13. 'Don't drive so fast!'
I'd rather you didn't drive so fast.

14. She never seems to succeed, even though she works hard.
However hard she works, she never seems to succeed.

15. It is not necessary for you to wear a uniform.
You don't have to wear a uniform.

16. It wasn't necessary for you to go to so much trouble on my behalf.
You needn't have gone to so much trouble on my behalf.

17. I remember them taking me to a training-camp forest.
I remember being taken to a training-camp forest by them.

18. She aitted that she had taken the necklace.
She aitted to taking the necklace.

19. Paul left the room without saying a word.
Paul didn't say a word when he left the room.

20. It wuch a boring film that we left before the end.
The film wo boring that we left before the end.

1. They last visited me five years ago.
   They haven't visited me for five years.

2. You might fall if you're not careful.
   Be careful or you might fall.

3. The man spoke very fast. Almost nobody understood what he said.
   The man spoke too fast for almost nobody to understand what he said.

4. How long have you bought this car?
   When did you buy this car?

5. We have learnt English for four years.
   We started learning English four years ago.

6. The book is interesting. It was bought last night.
   The book which was bought last night is interesting.

7. They don't take a map, so they can lose their way.
   If they don’t take a map, they might lose their way.

8. The flowers shouldn't be cut in this garden.
   You shouldn’t cut the flowers in this garden.

9. I haven't seen her for a long time.
   I didn't see her for a long time.

10. He said to me: 'I must finish these works on time.'
    He said to me that he must finish these works on time.

11. The man spoke very fast. Almost nobody understood what he said.
    The man spoke so fast that almost nobody understood what he said.

12. Why do you continue to look at me like that?
    Why do you keep on looking at me like that?

13. 'Don't drive so fast!'
    I'd rather you didn't drive so fast.

14. She never seems to succeed, even though she works hard.
    However hard she works, she never seems to succeed.

15. It is not necessary for you to wear a uniform.
    You don’t need to wear a uniform.

16. It wasn't necessary for you to go to so much trouble on my behalf.
    You needn't have gone to so much trouble on my behalf.

17. I remember them taking me to a training-camp forest.
    I remember being taken to a training-camp forest.

18. She admitted that she had taken the necklace.
    She admitted to taking the necklace.

19. Paul left the room without saying a word.
    Paul didn’t say a word before leaving the room.

20. It was such a boring film that we left before the end.
    The film was so boring that we left before the end.