All these sentences contain errors. Correct them.

1. When did you leave school?
2. How long has she been feeling/has felt unwell?
3. I've never met such a nice person before.
4. I have been waiting for you since four o'clock.
5. She has never written a letter by hand since she bought a computer. Она ни разу не писала письмо от руки с тех пор, как она купила комп. Другой вариант: She never writes a letter by hand since she has bought a computer. Она никогда не пишет письмо от руки, так как она купила комп.
6. I wonder where you have been all this time.
7. I have been learning English for five years.
8. You never know how he is going to react.
9. She tripped over the cat and nearly fell over.
10. Look! I have found a ten-pound note! - Where did you find it?
11. Margaret is taking driving lessons now.
12. In recent years, terrorism has become a
greater threat.
13. The rain came suddenly and soaked all the
washing.
14. Ever since we met, you have never asked me what I prefer to do.
15. How long have you lived/have you been living here?
16. I have been interested in sports since my childhood.
17. What have you been doing since you left Cambridge?

1 When did you leave school?
2. How long has she felt unwell?
3. I've never met such a nice person.
4. I have been waiting for you since four o'clock.
5. She never wroe a letter by hand since she had bought a computer.
6. I wonder where you have been all this time.
7. I have been learning English for five years.
8. You never know how he is going to react.
9. She has tripped over the cat and nearly fallen over.
10. Look! I have found a ten-pound note! - Where did you find it?
11. Margaret is taking driving lessons now.
12. In recent years terrorism has become a greater threat.
13. The rain came suddenly and soaked all the washing.
14. Ever since we met, you have never asked me what I prefer to do.
15. How long have you lived here?
16. I have been interested in sports since my childhood.
17. What have you been doing since you left Cambridge?