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