The _____ woman is my aunt.A.forty years old B.forty-year-olds C._英语解答

The _____ woman is my aunt.
A.forty years old B.forty-year-olds C.forty-years-old D.forty years' old

人气：481 ℃　时间：2020-01-28 18:18:52

解答

B.forty-year-olds为什么？为什么不是forty-year-old而是forty-year-olds？复制错了没有复制错啊，原题B就是forty-year-olds，答案上选B，但我不明白为什么后面加s？是题错了吗？