Ответ:
1. Have you still got yesterday's newspaper?
2. Which of the students in your group work hardest of all?
3. I have lost my ? . I must have dropped it somewhere.
4. I was surprised that Kate wasn't at meeting yesterday. She might not have known about it.
5. I expect the weather to be good today.
6. 2) He has just left the room.
7. The question was brought out at the conference.