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Dr. Black comes from either Oxford or Cambridge, I can’t remember where .

Dr. Black comes from either Oxford or Cambridge, I can’t remember___ .

A. where     B. there     C. which         D. that

Dr.Black comes from either Oxford or Cambridge,I can’t remember 　　　.?

A.where　　　　　 B.there?

C.which　　　　　 D.that?

Dr Black comes from either Oxford or Cambridge. I can't remember _____.

 A. where         B. there          C. which        D. that