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The black box is a necessary device on an airplane, which records its speed, direction and whether everything on the airplane______ normally.

A. will function  B. functioned   C. is functioning   D. has functioned 

 Stella was disappointed to find her new plan ______and fell into great depression.

  A. put away   B. carried out   C. turned down    D. left out

If we can ______ our present difficulties, then everything should be all right.

  A. come across   B. get over  C. come over   D. get off

 Anyway, that evening, ______ I’ll tell you more about later, I ended up staying at Rachel’s place.

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

 –Is there an express to Beijing tonight?

  -- There ______be , but you’d better call the booking office to make sure.’

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

 –Do you think that the 16^th Asian Games were a success?

 --Yes, _______!It couldn’t be better.

  A. relatively    B. approximately   C. absolutely  D. fortunately

Chinese President Hu Jintao called for an immediate cease-fire in Libya ______ an even worse humanitarian crisis in the country at the BRICS Summit in Hainan province.

   A. to prevent   B. to have prevented   C. preventing   D. having prevented

________scores of times, but Derek still couldn’t understand how to use past participle in a concrete situation.

A. Having explained            B. Having been explained    

C. Though it was explained       D. It was explained

Thank you for sending us ______ fresh vegetables of many kinds. You have done us _____ great service.

A./; a   B. the; a   C. /;/   D the; /

She’s got the job because she has the advantage _____others of knowing many languages.

over   B. above   C. against    D. beyond