I went to collage in?and began to work in

题目

I went to collage in?and began to work in
A.the 1980s;twenty B the 1980's ;my twenties

答案

第一个是年代的书写方式,固定用法.在1980年代就是 in the + 年代’s
第二个表示在某人的20岁左右,就用in one‘s twenties, 以此类推,在某人三十岁左右就是in one's thirties