При каком условии наблюдается резонанс?

1. She realized that nobody (would come).
2. We understood that she (saw) nothing.
3. He said he (would arrive) in some days.
4. My mother was sure I already (had come).
5. I didn't know they (were) in the room.
6. We supposed the rain (would stop) in some hours.
7. He said he never (had been) to London.
8. We wanted to know who (was singing) in the next room.

1.would come
2. saw
3. would arrive
4.had come
5. were
6. would stop
7. had been
8.was singing