题文
______ 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 |
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______ 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 |
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