We are delighted to establish business relationship with you．-考呗网

单选题We are delighted to establish business relationship with you．

D[分析]结构应用
根据句义判断，“和你们建立商务关系”表示的动作发生在谓语动词表示的动作之前，因此应用不定式的完成式，因此D为答案。

1We have been told that under no circumstances we can use the telephone in the office for personal affairs__________．

2The progress of civilization itself Can be measured by its range of mathematics．

3If being carried out successfully，the plan will completely change the traffic conditions in the city．