1. The plants have grown very quickly.

2. I've never had such a good time.

3. Have you heard the news?

4. Tom has hurt me so badly I still can't forgive him.

5. She has kept her secret for 20 years.

6. Sometimes I think I've known my friend for 1000 years.

7. There isn't a single day I haven't learnt something new.

8. They have never left their country.

9. I'm afraid I've lost my keys.

10. Recently he has made a gift for his mother.