—Doyouknowhowoldaretheytwo?—No.Ijustknowtheyare

问题详情：

—Do you know how old are they two?

—No.I just know they are________the same age.

A．in         B．at        C．of            D．on

【回答】

C　[be of the same age属固定短语，意为：“年龄一样大”。]

知识点：介词

题型：选择题