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          His failure ______ great disappointment to his teacher． 

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          2. B.
            have
          3. C.
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          4. D.
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          In order to find radium she did ________ in the lab for four years.

          1. A.
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          We should try our best to overcome all the difficulties; ________ is not available．

          1. A.
            failure
          2. B.
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          3. C.
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          4. D.
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          There's plenty of rain in the southeast, ________ there's little in the northwest.

          1. A.
            once
          2. B.
            then
          3. C.
            while
          4. D.
            if
          

			
          

			
          
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          The book is written in such easy English ________ I can read.

          1. A.
            so
          2. B.
            as
          3. C.
            that
          4. D.
            which
          

			
          

			
          
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          Only one of these pairs of trousers is worth ________.

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            to be bought
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            being bought
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          The man ____ of shooting 16 schoolchildren was returned to Anhui Province police on Friday following his arrest by Beijing police, the Xinhua News Agency reported on Friday.

          1. A.
            suspected
          2. B.
            suspecting
          3. C.
            being suspected
          4. D.
            to be suspected
          

			
          

			
          
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          Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.

          1. A.
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          2. B.
            what
          3. C.
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          4. D.
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          No matter how frequently ________, the works of Beethoven still attract people all over the world.

          1. A.
            performed
          2. B.
            performing
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            to be performed
          4. D.
            being performed
          

			
          

			
          
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          Mrs Smith warned her daughter _________after drinking

          1. A.
            never to drive
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            to never drive
          3. C.
            never drinking
          4. D.
            never drive
          

			
          

			
          
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