The girl was happy because talked to my mom.
Unfortunately, we have not read the novel until that time.
— She stayed at the airport half an hour before the plane arrived? — Yeah.
The girl showed the teacher the article, which was translated by her mother.
You did homework until 7 PM? — Yeah.
1. The girl was happy, because she talked with her mother.
2. Unfortunately, we have not read the novel until that time
3. "She was at the airport half an hour before the plane arrived?" - Yes.
4. The girl showed the teacher an article that her mother translated.
5. You did your homework before 7 P.M. Yes.