The tickets _ at the entrance we walk into the exhibition hall.A.checked B.being checked C.having checked D.to be checked C
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The tickets _ at the entrance we walk into the exhibition hall.A.checked B.being checked C.having checked D.to be checked C
The tickets _ at the entrance we walk into the exhibition hall.
A.checked B.being checked C.having checked D.to be checked C
The tickets _ at the entrance we walk into the exhibition hall.A.checked B.being checked C.having checked D.to be checked C
having done是指现在分词的完成形式作状语
这动作在谓语所表示的动作之前发生
也就是说表示 ：
The tickets having checked 这个动作 发生在 we walk into the exhibition hall.之前
另外 checked 也可表示被动
我觉得这个句子还可以这样表达：
The tickets having been checked at the entrance we walk into the exhibition hall.
而且 having checked 是一个从句 修饰tickets 省略that
The tickets （{that} having checked） at the entrance we walk into the exhibition hall.
A ：check 这个动作不是tickets 发出的 不能这样表达
B：being done 中文可译为：现在正在被…… 不符合时态和语意 不正确
D：to be done 经常表示：将来要做的动作 而且表达被动 显然也不符合时态语意 不对
所以选择C