Раскройте скобки, употребляя требующуюся форму инфинитива. 1. we expect (to be) back in two days. 2. the children seem (to play) since morning. 3. they are supposed (to work) at the problem for the last two months. 4. they seemed (to quarrel): i could hear angry voices from behind the door. 5. he seized every opportunity (to appear) in public: he was so anxious (to talk) about.