--- I don’t know whether I should go abroad or not, Mum．
--- I leave to your own judgment whether you should do it．
A. that
B. it
C. this
D. what
网友回答
A. that
(答案→)B. it
C. this
D. what
解析：
这题考查it做形式宾语，真正的宾语是：whether you should do it．句意是：--我不知道是否我该出国。--是否该去留给你自己判断。选B。