around the cultural relics for almost an hour we got together under a big tree for a sho

问题补充：

around the cultural relics for almost an hour, we got together under a big tree for a short break.

A. Having shown

B. Having been shown

C. To show

D. To be shown

答案：

A. Having shown

(答案→)B. Having been shown

C. To show

D. To be shown

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