Is it to hold the 2010 World Exhibition _______ makes Shanghai the focus of the world?

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

 I like _____ in the spring when the weather is warm and everything begins to grow.

   A. this         B. that         C. these         D. it 

 Many new means__________ to prevent the river ____________.

A. have found, from polluting

B. have found, from being polluted

C. have been found, from being polluted

D. has been found, from being polluted

 Most people would agree that nuclear science should be developed to benefit the human beings_______ harm them.

    A. more than           B. other than        C. better than      D. rather than

 His ability is beyond question; ______ has been in doubt is ______ he is prepared to work hard.

    A. what; that        B. what; whether    C. which; whether      D. that; that

 It had been half an hour before she found herself _____ in the wrong direction of

   her home.

   A. walking              B. to walk         C. walked        D. walk

 —Did the winner of the English Contest behave well?

—Really. She made a deep ________ on the judges.

A．idea           B．feeling           C．impression      D．sense

 Having said goodbye to their friends, they _______ for home.

    A. set about            B. set up         C set down        D. set off         

 My uncle’s house in the downtown area is much smaller than ours, but it is ______________ expensive.

 A. as much twice as      B. twice as much as   C. much as twice as   D. twice much as

 —Who____ it be that is knocking at the door?  

   —It ____ be Father, but I’m not sure.

A. can; must    B. can; may     C. must; can    D. may; must