Question

Susan's mother looks soyoung. It's hard to imagine she's already in her ______.

A.sixty
B.sixties
C.sixtieth

Answer 1

【答案】：B
句意：苏珊的妈妈看起来那么年轻。能以想像她已经六十多数了。在某人的几十岁：in one’s+整十的复数形式。故选B。