问题补充:
It’s nice to see you again. What since we last met?
A. have you done
B. had you done
C. have you been doing
D. did you do
答案:
A. have you done
B. had you done
(答案→)C. have you been doing
D. did you do
解析:考查时态。句意:很高兴又见到你。自从我们上次见面你一直在做什么?结合语境可知下文描述的是现在已经完成的动作,瞬间动词do不能和表示一段时间的时间状语连用,故选C。