单选题 On her way to the supermarket yesterday morning Mary met an old friend and stopped talking with him for quite a while.
【正确答案】 C
【答案解析】[解析] 应改为stopped to talk。因为“stop doing sth”表示“停止正在做的某事”,而“stop to do sth”表示“停下来正在做的某事转而去做另外一件事”。本句的意思是:“昨天早上在去超市的路上,玛丽遇到了一个老朋友,停下来同他聊了好一会儿。”