——Do you know her well ——Sure .We ___friends since ten years ago .A.were B.have made C.have been D.have become ,为什么?
问题描述：
——Do you know her well ——Sure .We ___friends since ten years ago .
A.were B.have made C.have been D.have become
,为什么?
答
A.首先since是完成时的标志,were是过去式,不能与since联用.
B.虽然这句话是现在完成时,但“我们是朋友”表状态,不应用make这种瞬时性德动词.
C.表现在完成时状态.（相当于现在进行时的am,is,are.）
D.become也不能用来表状态.