题目内容
So far nobody has claimed the money in the library.
| A．discovered | B．to be discovered |
| C．discovering | D．having discovered |
A
解析试题分析：考虑被修饰词与非谓语动词的主被动和时间关系。the money与 discover之间为被动关系且为过去，故为discovered. to be discovered为将来的被动，discovering 为主动进行。having disvovered为主动。句意为：到现在为止，还没有人认领在图书馆里发现的这些钱。
考点：考查非谓语动词作定语
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