Question

【题目】Tony's mum looks young and beautiful. It's hard to imagine she is already in her.
A.fifties
B.fifty
C.fiftieths
D.fiftieth

Answer 1

【答案】A
【解析】句意：托尼的妈妈看上去年轻漂亮。难以想像她已经五十几岁了。在某人几十几岁：in one's +整十的复数（用基数词），所以这里该用fifties。故选A。