6.I have lived in this house since I ___________(come)to Chi
6.I have lived in this house since I ___________(come)to China.
7.He _________(write)the letter to his pen pal since 9:00
8.They said they _________(raise)money for charity the next week.
9.We have ___________(用尽)money to buy the house.
10.Tom ______________(对.感兴趣)science ten years ago.