I have two elder brothers,___in the army for ten years.
问题描述：
I have two elder brothers,___in the army for ten years.
A.the elder of whom served
B.the older having served
C.the older of which served
D.the elder one has served
只是不明白A项为什么不对
答
A因为of whom到最后都只是作the elder 的定语,所以没有真正的谓语和宾语.所以错误
————————谓语是served啊