问题补充：
－What do you think of my answer to the questions?
－Sorry. What’s that? I about something else.
A. thought
B. had thought
C. am thinking
D. was thinking
答案：
A. thought
B. had thought
C. am thinking
(答案→)D. was thinking
解析：本题可以根据语境来理解，用过去进行时来表示在刚才别人讲话的时候，没注意听！
