Нужна помощь! Буду благодарна! :))

Open the brackets using the Complex Object.

1. We believe him ___ (to send) to the conference as our representative.
2. I watched them ___ (to go) down the mountain.
3. I saw her ___ (to switch) off the light and ___ (to leave) the room.
4. I heard my grandfather ___ (to tell) this story many times.
5. We saw them ___ (to approach) the forest.
6. He saw her ___ (to leave) the classroom.
7. We noticed her ___ (to turn) pale.
8. Did you hear the clock ___ (to strike) the hours?
9. We didn’t see her ___ (to come) in.
10. I heard him ___ (to speak) Japanese. It was great.

1. We believe him to be sent to the conference as our representative.2. I watched them going down the mountain.3. I saw her to switch off the light and leave the room.4. I heard my grandfather telling this story many times.5. We saw them approaching the forest.6. He saw her leaving the classroom.7. We noticed her turning pale.8. Did you hear the clock striking the hours?9. We didn’t see her to come in.10. I heard him speaking Japanese. It was great.