Answer:
1. Four people put their names on the list.
2. There isn't anything anyone can do about the problem.
3. She asked that I sit there until I felt better.
4. No one knows when they're planning to sell the house.
5. The lions did their tricks and returned to a large cage.
6. What is their problem?
7. Is anyone there?
8. The actors told me that they're planning to perform an extra show this Saturday.
9. I wonder why there was no warning for the storm.
10. Hippies wore their hair long.
Explanation:
I hope that the ones I answered helps. I don't understand the other 10.
