1. They seemed to be quarrelling: I could hear angry voices from behind the door.
2. I hate to be bothering you, but the students are still waiting to be given books for their work.
3. He seems to know French very well: he is said to have spent his youth in Paris.
4. He seems to be reading now.
5. He expected to be helped by the teacher.
6. I want to take you to the concert.