A-A+ The project _____ by the end of 1998.A.had bee 2022-08-12 18:08:19 问答库 阅读 197 次 问题详情 The project _____ by the end of 1998.A.had been completedB.had completedC.has been completedD.has completed 参考答案 参考答案：A
