______the missing boy,they had to stay there for another two weeks.A.Not finding B.Not found C.Not having found D.Having not found为何选C不选A

问题描述:

______the missing boy,they had to stay there for another two weeks.
A.Not finding B.Not found C.Not having found D.Having not found为何选C不选A

完成时态 ,表示一直没找到丢失的男孩。

Not finding 意思是 没有找(完全没有去找)
Not having found 是 没找到(又尝试过找,但没找到)
他们尝试去找那个失踪的小孩,没找到,所以要再呆在那儿两个星期.