He became famous as a host in China in his(20)/

问题描述:

He became famous as a host in China in his(20)/

He became famous as a host in China in his (twenties).
他在20多岁时就成为中国的著名主持人了.
in one's 加数词的复数形式,表示在多少岁时.这里指20-29岁之间.