请选择CBA5O-k)n5c3h'z:S1z6}9A7n当你想知道对方正在干什么，问：2W,m(R2|1Y
A. What’s he doing ?2W,m(R2|1Y
B. What are you doing ?2W,m(R2|1Y
C. What do you do ?2W,m(R2|1Y