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【help】一道英语选择题!

来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/04/29 16:30:59
【help】一道英语选择题!
Good news!Police confirmed that the murder weapon ___________ in a nearby lake.
A、has since been discovered
B、had ever discovered
请问为什么选A而不选B?我觉得既然前面是 confirmed,是过去时,后面就要跟过去的某种时态啊,为什么是has?
被动语态 是被发现 最好是 had been discovered