问题补充:
------Tony, are you listening to me ?
------Sorry sir, I to understand what you said just now.
A. try
B. was trying
C. tried
D. have tried
答案:
A. try
(答案→)B. was trying
C. tried
D. have tried
解析:句意:---托尼,你听我说吗?---对不起,先生,我正在理解你刚才说的话。由题干的语境可以看出,此处应是说话者刚刚正在尽力想做某事,因此用过去进行时,故选B。
考点: 考查动词时态的用法。