around our new dormitory,the foreigners were taken to visit our canteen,which lies behind

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A. Showing　
B. Having shown
C. Being shown　
(答案→)D. Having been shown
解析：此题考查非谓语动词作状语。从句子的意思我们可以知道the foreigners和show around之间是被动关系（外国朋友被带领）,另外show around的动作发生在were taken to的动作之前,所以我们应该用现在完成时的被动式形式。