He is sad. (lose his rugby ball) he has lost his rugby ball. 1 camera). 2 she was excited. (buy a new 3 they were happy. (win first prize) 4 we are worried. (not hear from bob yet)

1 When did you leave school?
2. How long has she been feeling 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.
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 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 it has 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?

1.Yesterday in 5 hours I read the newspaper.
2 on Sunday from 2 to 4 we worked in the garden
3 we studied English all day
4 when I called him, he was preparing for the lessons 
5 we went to the library, when she met us 
6 what were you doing last Saturday night from 5 hours to 7 hours?
7 when I wrote the letter, he did the exercise in English
8 we were watching TV, and they listened for
9 during lunch he read the newspaper
10 it was already dark when they came out of the woods
11 where you worked today at 9 o'clock in the morning?
12 I was waiting for you from 3 to 4 and then left