问题描述：
Since the end of the war,many of the priceless antiques _ to their rightful owners. A.have returned B.had returned Chad been returned D haveeen returned
问题解答：
我来补答
解题思路： 现在完成时的用法
解题过程：
Since the end of the war,many of the priceless antiques _ to their rightful owners.
A.have returned B.had returned Chad been returned D have been returned
选择D项，句意为：自从战争结束以来，许多无价的古董已经被归还给他们的合法拥有者。since 此处是介词 自从...... ，句子要用现在完成时，参选答案A和D，因为古董是被归还的，所以要用被动语态。
另附：since还可以用作连词，引导的从句要用一般过去时，主句要用现在完成时
They have worked here since they came to this village.
since还有个常用的句型
It is / has been +时间段+since +从句 （用一般过去时）
It is /has been six years since he came to his middle school.
明白了吗？如有问题请继续添加讨论啊，祝你考试取得好成绩。
最终答案：略
