Convert into past continues tense

here are the translations of the sentences into the past continuous tense:

1. The small boys were collecting dry leaves.
2. His brother was working in the mill.
3. My grandfather was waiting for his friends.
4. The old man was walking in the room.
5. We were listening to the news at noon.
6. I was not copying from the book.
7. Aslam was not playing cricket.
8. The boys were not singing songs.
9. The servant was not climbing the tree.
10. I was not joking with you.
11. Were you combing your hair?
12. Was the fire burning?
13. Were they listening to the teacher attentively?
14. Why were the boys quarreling among themselves?
15. Were they depositing money in the bank?