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    【题目】I often go on holiday with my parents _____ summer．

    A. on B. at C. in D. of

    【答案】C

    【解析】试题解析：句意：在夏天我经常和我的父母一起去度假。on后常接某日, 星期几, 某日或某周日的朝夕, 节日等；at后常接几点几分, 天明, 中午, 日出, 日落, 开始等；in后常接年, 月, 日期, 上午, 下午, 晚上, 白天, 季节, 世纪等；of……的。所以选C。

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