I. 1. He seems (to read) since morning. 2. She seems (to work) at his problem since she came here. 3. He appears (to know) French well. He is said (to spend) his youth in Paris. 4. The enemy was reported (to overthrow) the defence and (to advance) towards the city. 5. You seem (to look) for trouble. 6. They seemed (to quarrel). I could hear their angry voices. 7. They are supposed (to work) at the problem for the last two months. 8. Her ring was believed (to lose) until she happened (to find) it while cleaning the house. 9. They seemed (to wait) for ages.
Ответ:
1. to have been reading
2. to have been working
3. to know, to have spent
4. to have overthrown, to be advancing
5. to be looking
6. to have quarrelled
7. to have been working
8. to be lost, to found
9. to have been waiting
Объяснение: