Question

【题目】He became a famous writer when he was ________.

A. in his fifty B. at the age of fifty years old C. in his fifties D. in the fifties

Answer 1

【答案】C

【解析】

句意：他五十多岁时成了一名著名作家。年龄的表达：1.at the age of+某人岁数；2.in one's+基数词复数。his他的，形容词性物主代词；fifty基数词，五十; fifties复数形式。故选：C。