第34题: [单项选择]— Did you have difficulty finding John's house —Not really. John had given us good directions and we ______find it. A. would B. could C. had to D. were able to 参考答案:D 答案解析:[解题指要] 该题测试短语be able to与情态动词can的区别。表示过去有能力并实际上成功地做到某事,要用was/were able to,不用could。没有做到可用couldn’t或wasn