obviously made no difference whether I was there to look after things or not.
A. It
B. That
C. What
D. This
网友回答
(答案→)A. It
B. That
C. What
D. This
解析：本题考查名词性从句。本句是主语从句，It在句中作形式主语，真正的主语为whether I was there to look after things or not；句意：我是否在那儿照看东西显然是没有任何区别的。