1. They seemed (to quarrel): I could hear angry voices from behind the door. 2. They are supposed (to work) at the problem for the last two months. 3. The only sound (to hear) was the snoring of grand- father in the bedroom. 4. Her ring was believed (to lose) until she happened (to find) it during the gen- eral cleaning. It turned out (to drop) between the sofa and the wall. 5. They seemed (to wait) for ages. 6. I hate (to bother) you, but the students are still waiting (to give) books for their work. 7. He seized every opportunity (to appear) in public: he was so anxious (to talk) about. 8. Is there anything else (to tell) her? I believe she deserves (to know) the state of her sick brother. 9. He began writing books not because he wanted (to earn) a living. He wanted (to read) and not (to forget). 10. I consider myself lucky (to be) to that famous exhibition and (to see) so many wonderful paintings. 11. He seems (to know) French very well: he is said (to spend) his youth in Paris. 12. The enemy army was reported (to overthrow) the defence lines and (to advance) towards the suburbs of the city. 13. The woman pretended (to read) and (not to hear) the bell. 14. You seem (to look) for trou- ble. 15. It seemed (to snow) heavily since early morn- ing: the ground was covered with a deep layer of snow.