mn giúp mình với ạ (đúng mình vote 5 sao)

1. The fire had already reached the roof by the time the firefighters arrived.
2. Joe Smith went to prison because he had stolen a lot of money.
3. Helen went to bed after she had watched her favourite TV programme.
4. My father bought the new car after he had tried it a few times.
5. By the time Sonia got to the party, everyone had begun dancing.
6. Lorenzo had eaten all the ice cream before I opened the fridge.
7. There was a lot of snow outside because it had snowed earlier in that day.
8. Beatriz didn’t pass the test because she hadn’t studied at all.
9. Look! Somebody has left the windows open.
10. By the time the police arrived, the burglar had broken into my neighbour’s house.
11. The girl felt guilty because she had drunk all the milk.
12. Our flat was robbed because we hadn’t locked the front door.
13. My father couldn’t find the money because he had hidden it in a drawer.
14. Leonard didn’t have money for the bus because he had forgotten to ask his mother.
15. My cousin never visited mine until his father took him one day.
16. Her bicycle wasn’t there because a friend had taken it without asking her.
17. Daniel was arrested after he had escaped from prison.
18. When Kathy met Jonathan, he had joined the Navy.
19. Before they arrived at the airport, they had paid the taxi driver.
20. His dog had died two weeks ago. He was very sad.