—Is Mary ? —No, she is a girl.A. twelve years old; fourteen years old.B. twelve years old;

—Is Mary ?
—No, she is a girl.
A. twelve years old; fourteen years old.
B. twelve years old; fourteen -year -old.
C. twelve - year - old; fourteen years old.
D. twelve - year - old; fourteen - year -old.

A. twelve years old; fourteen years old.(答案→)B. twelve years old; fourteen -year -old.C. twelve - year - old; fourteen years old.D. twelve - year - old; fourteen - year -old.解析：玛丽是12岁了吗？不，她是一个14岁的女孩。12岁。year,要加复数。数次加连字符再加名词的单数表示形容词。故选B。

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