=> 1. I work all weekend so I won't be able to come to your party.
2. How long have you waited for her to come?
3. Julie doesn't eat much although we make sure that she has a good meal.
4. My mom was watching TV when I got home.
5. We will go sailing before the arrival tomorrow.
6. He had driven for 200 miles by the time he got to New York.
7. By the time my mom came home, I had finished my homework.
8. When you saw them, they were moving the boxes.
9. At 4 o'clock they were watching movies together.
10. How long has he trained when he entered the competition?
Hơi lâu xí thông củm >.<