It ____ over 10 years since my grandpa _______.3QA.is,died B.is,has been dead C.has been,was dead D.was,has died

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It ____ over 10 years since my grandpa _______.3Q
A.is,died B.is,has been dead C.has been,was dead D.was,has died

答案A 考查句型结构it is +段时间+since从句,其中从句常用过去时.查看原帖>>