问题补充:
You must be very tired. Why not a rest?
A. to stop to have
B. to stop having
C. stop to have
D. stop having
答案:
A. to stop to have
B. to stop having
(答案→)C. stop to have
D. stop having
解析:why not +动词原形,stop to do sth 表示停下去做另一件事,stop doing sth 停下做原来的事,由原来前面的第一句话,可知,停下去做另一件事,故选C