грамотно, не очень но нужно..

1. When I saw Mary she was speaking to a person who didn't introduce to me.2. Why the book didn't bring yesterday?3. It was the first time I offered to go on a business trip to India.4. Mary was speaking on the phone while the coffee was make.5. When I entered the hall, Mary was showing the pictures.6. I wonder whether this house was built in 1700?7. I am sure this question will solve soon.8. Frankie didn't explain how to work with that equipment.9. Jane gave the new version of the agreement?10. Kate didn't see for a long time. Do you know where she was?11. Peter went to Kiev when he heared about Han’s wedding.12. Jane went to office when she was telling about Jane’s visit.13. Mark didn't finish the repot; although he has worked on it for 2 days.14. It’s the first time Jane invited to the international exhibition.15. Carl came to the office when the dispute about salary reducing taking place.16. Will the conference take place next month?17. Did the salary give ? – Not yet. It will have given in a few days.18. Alfred bringed to the new hotel, showed the room and asked to be ready for the evening meeting.19. Mark has known for a few months when he informed about his living the company.20. Kate had worked at HGT for 2 weeks when she has informed about its bankruptcy. 

ответ:

sally has been working here for six months.

i’ve been waiting for two hours

have worked in school since 2008. я работаю в школе с 2008 года.

i have been running for 2 hours. я бегу уже два часа.

she has been watching tv for 3 hours. она смотрит телевизор в течение 3 часов.

i haven't seen my aunt for a long time. have worked in school since 2008.

i have been running for 2 hours. я бегу уже два часа.

i have been watching tv for 3 hours.

i haven't seen my aunt for a long time.

she has been working at school since 2008

they have known each other since june.

it was good to see mark again. i hadn’t heard anything about him since school days.

we go to the seaside for two weeks every year.

mr taylor has known me for three years

i ’ve been working since six o’clock and i’m getting tired

. we haven’t seen jimmy since christmas

i’ve known her since last summer