高等继续教育 / 经贸英语
正确率：100%
题型描述: 单选题
So far we _ _ _ _ _ business relations with the firms in more than one hundred countries in the world.
A.have established
B.are established
C.shall establish
D.had established
So far we _ _ _ _ _ business relations with the firms in more than one hundred countries in the world.
A.have established
B.are established
C.shall establish
D.had established
参考答案：