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We won’t give up _______ we should fail ten times.

   A. since     B. even if    C. whether    D. as if

It has been proved that        hard leads to success.

   A. work       B. works       C. worked       D. working

 27. –Shall we meet at 6:00 or at 6:30?

-__________.

  A. At any time.                               B. Yes, at 6:30.

  C. Well, either time will do.                    D. Any time is OK.

_____ you have got a chance, you might as well make full use of it.

  A. As soon as     B. After    C. Although    D. Now that

_______ basketball, the girl students are also encouraged to play football.

A. As good as   B. As long as    C. As many as   D. As well as

This pen is ___ mine, ___ his.

A. never, except  B. nor, also  C. not, but  D. not, or

His father feels ___ his duty to help others.

A. this   B. it   C. that   D. what

There is no such __ person in the world.

A. a  B.an   C. /   D. the

---I drove to Zhuhai for the air show last week.---Is that ___ you had a few days off?

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

She thought I was talking about her daughter, ____, in fact, I was talking about my own daughter.

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