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        1. Scientists are still ______ a cure to cancer.

          A. searching of
          B. searching
          C. searching for
          D. in search
          C
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          Scientists are still ______ a cure to cancer.
           [     ]
          A. searching of
          B. searching
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          Scientists are still _________ a cure to cancer.

          [  ]
          A.

          searching of

          B.

          searching

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          in search of

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