Ex 26 open the brackets, using the passive voice (perfect forms).1. he was sure that his mistake never (discover). 2. she didn't follow the advice she (give). 3. when she returned, the subject of the conversation already (change). 4. everybody (send) an invitation? 5. i didn't know that the letter (lose). 6. he said he had never been there but he often (tell) about this place. 7. all the books from the library (return) by the end of term. 8. the invitation (refuse; accept)? 9. it always (know) as a most wonderful place for a holiday. 10. there are books that (not read) for years. 11. when we came to the cinema, all the seats (sell). 12. i never (speak) to like that before. 13. the house was dark and damp inside like any other building which (not live in). 14. when my parents were born, television (not invent) yet.
1. has never been discovered.
2. has been given.
3. has already changed.
4. has everybody been sent an
5. has been lost
6. has often been told
7. have been returned
8. has been refused/accepted
9. has been known
10. have not been read
11. have been sold
12. have never been spoken
13. have not been lived
14. has not been invented