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13.We often have a           holiday on National Day.(  )
A.seven daysB.seven-daysC.seven-dayD.seven day's

分析 國慶節我們通常有七天假期.

解答 答案:C.
根據We often have a           holiday on National Day,可知本句考查了復合形容詞的用法,這里用復合形容詞修飾名詞holiday.連字符號連接數詞、名詞和形容詞,用作形容詞,這時的名詞不用復數形式.結合選項可知應選C.故選C.

點評 本題考查指導學生了解two-month用做形容詞時,加短線用單數,并且后面必須有名詞.

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