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 People often find themselves caught in such a _____ as “whether…or not…”.

   A. dilemma                     B. endeavor           C. fault                  D. survival

 Was it ______ the international conference that made the city the focus of this area?

   A. held                    B. hold                C. holding              D. being held

 Mistakes don’t just happen; they occur for a reason. Find out the reason, and then making the mistake becomes ______.
A. favorable        B. precious          C. essential      D. worthwhile

 _________happened to be no one in the building when the fire broke out.

　　A. It      B. There        C. This          D. That

A good storyteller must be able to hold the listeners' attention ______ he reaches the end of the story.

　　　 A. when　　　　 　　 B. until　　　 　 C. while　 D. unless

 So sudden ________that the enemy had no time to escape.  

A. did the attack     B. the attack did      C. was the attack    D. the attack was

 He was watching for kids ______ out from between ______ cars and slowed down when he thought he saw something.

   A. dashing, parked     B. dash, parking   C. dashing, parking     D. to dash, parked

 It’s already10 o’clock. I wonder how it ____ that she was two hours late on such a short trip.

   A. came over     B. came out     C. came about     D. came up.

 Life is like a long race _____we compete with others to go beyond ourselves.

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

—The new 3D film Titanic will be on at 7：30 pm．Shall I pick you up at 6：40 pm?

—OK, I 　　 you at that time．

　　　 A．was waiting for B．shall be waiting for

　　　 C．have been waiting for　　　　 　　D．shall have waited for