1. The reason which he didn't go to school is that he was ill.
    ________________________________________________________
2. Those who wants to go with me put up your hands. 
    ________________________________________________________
3. The boy, his mother died last year, studies very hard. 
    ________________________________________________________
4. I have two sisters, both of them are doctors. 
    ________________________________________________________
5. We're going to visit the school where your brother works there. 
    ________________________________________________________
6. He is the only one of the students who have been invited to the English Evening. 
    ________________________________________________________
7. That is the way which they work. 
    ________________________________________________________
8. Those have questions can ask the teachers for advice. 
    ________________________________________________________
9. Who is the man who has white hairs?
    ________________________________________________________
10. I will never forget the days which we had a good time together at the sea. 
    ________________________________________________________

A. which they stayed
B. at that they stayed
C. where they stayed at
D. where they stayed

A. which
B. that
C. when
D. on which

A. where
B. that
C. which
D. there

A. when
B. where
C. which
D. as

A. why
B. where
C. how
D. /

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.

A. which
B. when
C. whom
D. where

[     ]

A. where
B. when
C. who
D. which

A. that
B. which
C. where
D. when