It was not until mid-nightthey reached the camp site.A. to stop to haveB. to stop havingC.

问题补充：

It was not until mid-nightthey reached the camp site.

A. to stop to have

B. to stop having

C. stop to have

D. stop having

答案：

(答案→)A. to stop to have

B. to stop having

C. stop to have

D. stop having

解析：考察stop用法。Stop后接动名词表示停下正在做的事情，接不定式表示停下来去做另一件事情。根据题意，直到午夜他们才停下来以让他们到达营地。故选A。