日本成人片在线_久久免费精品视频_国产午夜精品久久久久久免费视_校花撩起jk露出白色内裤国产精品_av影片免费在线观看_国产小视频在线看_最新av免费在线观看_99久久99久久精品国产片_欧美成人猛片aaaaaaa_蜜桃免费网站一区二区三区

1. We are living in an age ____ many things are done on computer.
2. We are living in an age ____ we have a lot of things to learn about.
3. I can think of many cases ____ students obviously knew a lot of English
    words and expressions but couldn't write a good essay.
4. I can think of many cases ____ you know nothing about.
5. I want to know the date ____ you were born.
6. I have remembered the date ____ I forgot just now.
7. Do you know the reason ____ he is absent today?
8. That is the reason ____ I want to know.
9. This is the factory ____ his father works.
10. This is the factory ____ his father built.
11. The key ____ she was opening the door broke.
12. The library ____ we often go on Sundays is not far from our school.
13. No one knows the reason ____ she is leaving so early.
14. At last they came to a river ____ a new bridge is being built.
15. The old man always wears his glasses ____ he can't see anything.