高等继续教育 / 电子商务英语
正确率：100%
题型描述: 单选题
This is the building that ＿＿＿＿＿＿＿＿ last summer.
A.was completed
B.had been completed
C.completed
D.was completex
This is the building that ＿＿＿＿＿＿＿＿ last summer.
A.was completed
B.had been completed
C.completed
D.was completex
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