- I beg your pardon?
- Your mind must have been when I was speaking, wasn’t it?
A. wondering
B. wandering
C. walking
D. speaking
网友回答
A. wondering
(答案→)B. wandering
C. walking
D. speaking
解析：考查时态，后面有引导词when意思“当…时候”，当我在讲话时你的心肯定一直在徘徊，must have been doing表示肯定一直在做某事，所以选C