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        1. Fred, who had expected how it would go with his daughter, had a great worry______ his mind.
          A. on           S. in           C. with         D. at      
          A
          考查介詞與名詞的搭配。句意:Fred心里很擔心,他一直想著他女兒的情況到底怎么樣了。短語on one’s mind意為“掛念,惦記”;in one’s mind意為“在記憶里,有腦海中”
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