．(2013·江西九江高三二模) around the university, we then were taken to a building, where many scientists worked.
A. Showing
B. Having been shown
C. Being shown
D. Having shown
网友回答
A. Showing
(答案→)B. Having been shown
C. Being shown
D. Having shown
解析：选B 考查非谓语动词。分析句子成分可知，句中的主语we与show之间构成逻辑上的动宾关系，且根据题中的“we then were taken to a building”可知，应用完成被动式，故选B。