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Kunming is called  “Spring City”, but it _____ snow in winter.

    A. shall        B. can          C. must          D. might

It is so difficult a question_______ none of the kids could work it out.

    A. as          B. that         C. which         D. X

Many of them turned a deaf ear to his advice, ________ they knew it to be valuable.

    A. as if       B. now that      C. even though     D. so that

Scientists are convinced _______the positive effect of laughter ______ physical and mental health.

    A. of ; at       B. by ; in       C. of ; on        D. on ; at

"We can't go out in this weather," said Bob, ________ out of the window.

    A. looking      B. to look      C. looked        D. having looked

Along with the email was my brother’s promise ______ I came first in the competition, he would buy me an MP4.

   A. what        B. that          C. that if      D. whether

The professor could hardly find sufficient grounds________ his arguments in favor of the new theory.

A. on which to base   B. which to base on   C. to base on     D. to be based on

By the time he arrived in Beijing, we _______ there for two days.

   A. will have stayed       B. stay       C. have been staying    D. had stayed

---It was Sunday today, and I _______ up very early.

  ---So you really had a good rest.

A. didn’t need to get    B. needn’t have got   C. needn’t to get    D. don’t need get

Since you are my daughter's classmate, we'd like to ______ you _______ tonight.

    A. put ; down       B. put ; in      C. put ; off        D. put ; up