1. It was about midnight _________ we found the lost child, crying under a tree.
A. that B. until C. when D. where
2. It's some time _________ I have spoken to you about this matter.
A. that B. unless C. since D. until
3. It was ten _________ he stood at aunt’s door and rang the bell.
A. when B. until C. since D. that
4. I think it won’t be long _________ they understand each other.
A. when B. until C. since D. before
5. How pleased I am tonight! It’s years _________ we had so great a time together.
A. when B. that C. before D. since
6. It was some time _________ we realized how important the matter is.
A. when B. until C. since D. before
7. —Did you come home very late last night?
—No. It was just half past seven _________ I appeared before my parents.
A. that B. when C. until D. since
8. How time files! It seems like years _________ I last saw you.
A. when B. that C. since D. before
9. It’s more than half a century _________ the People’s Republic of China was liberated.
A. when B. that C. since D. after
答案：1—5 CCADD 6—9 DBCC