一道初三英语的选择题.He wrote this book in his____.A forty B the fortieth C_英语解答

一道初三英语的选择题.
He wrote this book in his____.A forty B the fortieth C forties D fortieth

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解答

C 整数年龄的复数代表在人的年龄段意思是他在四十多岁时些了这本书