问题
选择题
Our new physics teacher got a pretty and lovely girl _____ .
A．in his thirty
B．in his thirty’s
C．in his thirtieth
D．in his thirties
答案
答案：D
题目分析：句意：我们的新物理老师在她三十多岁时有了一个漂亮可爱的女儿。in one’s +数词复数，在某人几十多岁时。结合句意，故选D。