--David, are you 1istening to me?
---Sorry, Dad. I to make sense of what the reporter said.
A. was trying
B. have tried
C. am trying
D. tried
网友回答
(答案→)A. was trying
B. have tried
C. am trying
D. tried
解析：考查时态：句意：--大卫，你在听吗？--对不起，爸爸，我在想理解记者说的话。说明大卫刚刚正在想理解记者说的话，用过去进行时。选A。