There was woman in the room, sitting and looking at me in the dark.A. a 80-year-oldB. an

There was woman in the room, sitting and looking at me in the dark.
A. a 80-year-old
B. an 80-year-old
C. a 80-years-old
D. an 80-years-old

A. a 80-year-old(答案→)B. an 80-year-oldC. a 80-years-oldD. an 80-years-old解析：英语中两个或多个单词中间可以用短横线连接起来，起一个相当于形容词的作用，这类单词叫做合成词。其一般构成规则就是其构成单词一般都要用原形。句意:房间里坐着一个八十岁的老妇人，在黑暗中看着我。Eighty词首音素是元音，不定冠词用an，选B。

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