In the west, people make a rule to send Christmas present to their relatives and friends.
A. this
B. that
C. it
D. the following
网友回答
A. this
B. that
(答案→)C. it
D. the following
解析：it 为形式宾语，真正的宾语是其后的不定式 to send Christmas present to their relatives and friends。