1.A lot of people came to watch the ocean liner return home after a long voyage.
2.Everybody thought him to be quite a reliable person.
3.The captain declared the load to be too much for his small boat.
4.He seems to know a great deal about the history of navigation.
5.The boat, though very small, proved to be quite reliable.
6.The 20th century is considered to be the century of space travels.
7.The motor proved to be quite efficient.
8.Atomic ice-breakers are known to operate on a negligible quantity of atomic fuel.
9.The results of the test were found to be very interesting.
10. I know them to be working on the problem of protecting the cosmonauts from the effect of sun radiation.
11. Rubber is known to have been brought from America.
12. Ink is supposed to have been invented in Egypt.
13. We expected him to be appointed director of a new automobile plant.
14. This question appears to be of great importance.
15. The plan proved to be a great success.
16. The travellers found the people of the small island (to be) very friendly.
17. They reported the capacity of the new engine to have been increased.
18.The owner of the motor car wanted the old engine to be replaced.