Children need friends their own age to play with.A. of B. forC. in D. at

问题补充：

Children need friends their own age to play with.

A. of

B. for

C. in

D. at

答案：

(答案→)A. of

B. for

C. in

D. at

解析：A 考察介词。Of their own age意思“和他们一样的年龄”，在句中做定语。句义：孩子们需要和同龄朋友一起玩耍。