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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 国庆节我们通常有七天假期.

解答 答案:C.
根据We often have a           holiday on National Day,可知本句考查了复合形容词的用法,这里用复合形容词修饰名词holiday.连字符号连接数词、名词和形容词,用作形容词,这时的名词不用复数形式.结合选项可知应选C.故选C.

点评 本题考查指导学生了解two-month用做形容词时,加短线用单数,并且后面必须有名词.

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