题目内容
2．Jeff and David were in the garden setting off fireworks _______Christmas Day．（ ）| A． | at | B． | in | C． | on | D． | with |
分析 圣诞节，杰夫和大卫在花园里放烟花．
解答 答案：C．on．时间介词in+一段时间或或固定搭配in the morning/in the afternoon/in the evening；on+星期/节日/具体的某一天/具体某一天的早中晚；at+具体时刻或固定搭配at noon/at night．Christmas Day（圣诞节）其前要用on，故答案选C．on．
点评 熟记时间介词的区分，分析清楚句子中的时间状语，选择与之相对应的时间介词．
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