高等继续教育 / 英语语法
正确率:100%
题型描述: 单选题
My friend, who ______ on the International Olympic Committee all his life, is retiring next month.
A.served
B.has served
C.had served
D.is serving
My friend, who ______ on the International Olympic Committee all his life, is retiring next month.
A.served
B.has served
C.had served
D.is serving
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