A. which
B. in which
C. that
D. for which
12. I think that was the reason ______ the football team lost the game.
A. what
B. why
C. how
D. which
13. ______ is known to the world， Mark Twain is a great American writer.
A. That
B. Which
C. As
D. It
14. Meet me at the same place _____ you did yesterday.
A. that
B. what
C. which
D. as
15. Such a device _____ he was given proved almost worthless.
A. as
B. like
C. that
D. which
16. More and more young people like playing football， _____ is an exciting game.
A. what
B. which
C. that
D. because
17. Mount Blanc， ______ we visited last summer， is the highest mountain in Europe.
A. where
B. that
C. what
D. which
18. He picked up the book， the cover ______ had been torn.
A. of which
B. which
C. of whose
D. of that
19. He told her nothing， ______ upset her.
A. that
B. for which
C. about which
D. which
20. The car ran over a dog and a boy ______ were just crossing the street.
A. who
B. whom
C. that
D. which
