高等继续教育 / 经贸英语
正确率：100%
题型描述: 单选题
We are glad that in the past few years, we, by joint efforts, _ _ _ _ _ both business and friendship.
A.have greatly been promoted
B.have greatly promoted
C.had greatly been promoted
D.had greatly promoted
We are glad that in the past few years, we, by joint efforts, _ _ _ _ _ both business and friendship.
A.have greatly been promoted
B.have greatly promoted
C.had greatly been promoted
D.had greatly promoted
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