4. We turned out to have already met before.
5. You seem to be tired.
6. The working conditions turned out to be more difficult than it has been supposed.
7. Do you happen know this man?
8. The book you gave me has turned out to be boring.
9. The new buses turned out to be very comfortable.
10. One of the three Bronte sisters Charlotte is considered to be the most talented.
11. The English woman-writer Voinich is known to have lived in St. Petersburg for a number of years and studied Russian literature. Russian literature is considered to have influenced her creative activity.
12. Your friend seems to be very interested in ancient history.