第27题: [单项选择]He ______ a glass while he ______ the dinner. A. broke; cooked B. was breaking; cooked C. broke; was cooking D. was breaking; was cooking 参考答案:C 答案解析:[分析] 测试点为短暂性动词和延续性动词的用法。 break为短暂性动词,cook为延续性动词。在由时间从句组成的主从复合句中,一般主句用短暂性动词,从句用延续性动词。如:I know her sin