——Do you know David well?——Sure. Wefriends since ten years ago.A. areB. have beenC. wereD.

发布时间：2020-08-17 04:17:57

——Do you know David well?
——Sure. We    friends since ten years ago.
A. are
B. have been
C. were
D. had been

网友回答

A. are
(答案→)B. have been
C. were
D. had been
解析：句意:--你对大卫熟悉吗？---当然，我们自从十年前就是好朋友。根据时间状语since ten years ago.因为与since连用的时态是现在完成时，故选B。
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