On the side of the hill, there is a _________ which was once the

On the side of the hill, there is a _________ which was once the entrance to a gold mine
A、deep hole in ground
B、hole deep in ground
C、deep hole in the ground
D、deep in the ground hole
【正确答案】：C
【题目解析】：形容词修饰名词一般放在名词前面，根据冠词后面的a可知后面应接名词短语，故排除选项B和D，in the ground意为ie“在地下”。