注意：此页面搜索的是所有试题
题目内容
（国家开放大学英语语法）
We are glad that in the past few years, we, by joint efforts, ( ) both business and friendship.
A.have greatly promoted
B.have greatly been promoted
C. had greatly promoted
D.had greatly been promoted
A.have greatly promoted
B.have greatly been promoted
C. had greatly promoted
D.had greatly been promoted
参考答案