问题
选择题
He is _______ boy.
A. a eight—years—old
B. an eight—year----old
C. an eight----years----old
答案
答案：B
题目分析：句意：他是一个八岁的男孩。“八岁的”作定语，要用eight—year—old形式，单词之间加连字符，year用单数形式；eight以元音音素开头，要用an。故选B。
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