问题
选择题
The project__________, my colleagues and I had a party to celebrate it.
A．completed
B．was completed
C．had completed
D．completing
答案
答案：A
题目分析：句意：项目完成了，我和同事举办了聚会庆祝。因为中间有逗号，但是没有连词，说明前面的不是句子，而是独立主格结构做状语，用逻辑主语+非谓语动词，因为the project和complete是被动关系，所以用过去分词，选A。