а) 1. William likes reading detective stories. 2. Reading is useful. 3. William liked being read to. 4. Having read the telegram twice, he understood that the matter needed immediate attention. 5. The girl reading a book is my sister. 6. Charles denies knowing these people. 7. Charles denies having asked any questions. 8. Charles denies being helped. 9. Charles denies having been helped. 10. Charles denies having been asked any questions. Don’t leave without speaking to the chief. 12. Not knowing the man, I can’t introduce you to him. 13. Having spent a month in the country, she looked much better. 14. Apartments facing south get more sunlight. 15. While going home from school Betty met some of her friends. 16. Thinking he was asleep I turned off the lights. 17. While waiting for a train, he read a magazine. 18. After leaving school his son went to work at a factory. 19. On learning the news she decided to go and see her cousin. 20. When crossing the street, be careful. 21. I remember leaving a message for you. 22. I remember his leaving a message for Mr. Blake. 23. Jane doesn’t like being spoken about. 24. His knowing English will help him in his work. 25. The film is worth seeing.
b) 1. The situation being favorable, they bought the shares (акции). 2. It being Sunday, the shops were closed. 3. There being a lot of things to discuss, the conference lasted for a long time. 4. Jack insisted on your making a report on Tuesday. 5. Ann was proud of her pictures being exhibited at the show. 6. He was disappointed at not being invited to yesterday’s party.