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

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

【答案】C

【解析】試題解析：句意：在夏天我經常和我的父母一起去度假。on后常接某日, 星期幾, 某日或某周日的朝夕, 節(jié)日等；at后常接幾點幾分, 天明, 中午, 日出, 日落, 開始等；in后常接年, 月, 日期, 上午, 下午, 晚上, 白天, 季節(jié), 世紀等；of……的。所以選C。

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