Idid not know that you already (to read) this book 2. he did it better than i (to expect). 3. he said that the bus (to be) here soon. 4.1 think it all happened soon after the meeting (to end). 5. they decided that they (to bring) us all the necessary books. 6. he said that he (can) not do it without my help. 7. he asked the students whether they ever (to see) such a book. 8. it was decided that we (to start) our work at eight o'clock. 9. i told you that i (to leave) for minsk on the following day. 10. the boy did not know that he already (receive) a good mark. 12. he wanted to know what (to become) of the books. 13. the visitors were told that the secretary just (to go out) and (to come back) in half an hour. 14. he said we (may) keep the books as long as we (to like). 15. we thought that he not (to be able) to make his work in time and therefore (to offer) to help her. 16. when i came they (to tell) me that he (to leave) half an hour before. 17. it was soon clear to the teacher that the control work (to be) a difficult one. 18. i decided that next year i (to go) to see my old friend again. i not (to see) him since he (to go) to moscow. перевод

1). I didn't know that you had already read this book.
Я не знал, что вы уже читали эту книгу. 
2. He did it better than I had expected.
Он делал это лучше, чем я ожидал.
3.He said that the bus would be here soon. 
Он сказал, что автобус будет здесь скоро.
4. I think it all happened soon after the meeting had ended.
Я думаю, что всё это случилось вскоре после того, как закончилось собрание.
5. They decided that they had brought us all the necessary books.
Они решили, что принесли нам все необходимые книги.
6. He said that he couldn't do it without my help.
Он сказал, что не может сделать это без моей
7. He asked the students whether they ever had seen such a book.
Он спросил студентов видели ли они когда-либо такую книгу.
8. It was decided that we would start our work at eight o'clock.
Было решено, что мы начнём работу в 8 часов.
9. I told you that I had left for Minsk on the following day.  
Я говорил Вам, что я уехал в Минск на следующий день.
10. The boy did not know that he had already received a good mark.
Мальчик не знал, что он уже получил хорошую оценку.
12. He wanted to know what had become of the books.
Он хотел знать, что стало с книгами.
13. The visitors were told that the secretary had just gone out and would come back in half an hour.
Посетителям сказали, что секретарь только что вышел и вернётся через полчаса.
14. He said we had been allowed to keep the books as long as we liked.
Он сказал, что нам разрешили держать книги столько, сколько мы хотим.
15. We thought that he wouldn't be able to make his work in time and therefore offered to help her.
Мы решили, что он(а) не сможет сделать эту работу вовремя и поэтому предложили ей.
16. When I came they told me that he had left half an hour before.
Когда я пришёл, мне сообщили, что он уехал полчаса назад.
17. It was soon clear to the teacher that the control work had been a difficult one. - Скоро учителю стало ясно, что контрольная работа была трудной.
18. I decided that next year I would go to see my old friend again.
      I haven't seen him since he had gone to Moscow. 
Я решил, что на следующий год я снова поеду навестить старого друга. Я не видел его с тех пор, как он уехал в Москву.