问题
选择题
Nowadays many women are _____ their late twenties or early thirties when they have their first child.
A.of
B.in
C.on
D.over
答案
答案:B
题目分析:句意:现在,很多女性都是在她们20多岁末期或者30岁初期时,生育她们的第一个孩子。In one’s twenties是固定用法,意思是在某人20多岁时,选B。