第29题: [单项选择](On her way) to the supermarket yesterday morning, Mary (met) an old friend and (stopped talking) with him. for (quite a while). A. On her way B. met C. stopped talking D. quite a while 参考答案:C 答案解析:动词短语用法错误,应改为stopped to talk。stop to do“停下来去干另外一件事”;stop doing“停止正在做的事情”,句中是说玛丽停下来和她的老朋友说话。