Ответ:

1. I haven't seen him for over 3 years
2. she has been working for the same firm since 1993
3. I see him now he is taking to John
4. I generally get up early but I didn't do so yesterday
5. what time does he usually arrive
6. I have been reading this book for the last 2 weeks but I haven't finished half of it yet
7. when Mary came home last night her sister was cooking dinner
8. I met her while I was coming here this morning
9. they publish many new books every year
10. why didn't you tell me earlier
11. I don't know where he lives now
12. he says he has been to Rome several times
13. you must tell him before he leaves
14. I will phone you as soon as I pass my exam
15. when we arrived at the theater the play had already begun
16. it has been snowing ever since I got up this morning
17. how long have you been waiting for her?
18. he didn't tell anybody what he had done. only his brother knew the truth
19. when he came to England he didn't understand anything. when he had been there about 6 months he was able to carry on a conversation
20. I have known him since he was a child
21. he has had many different jobs since he left school
22. if you don't take an umbrella you'll get wet
23. tell him to telephone me if you see him
24. she said she wouldn't take to him if he didn't apologize
25. since she started her new diet ,she has lost a lot of weight