People in the west make a rule to buy Christmas presents for their relatives and friends.A

问题补充：

People in the west make a rule to buy Christmas presents for their relatives and friends.

A. it

B. that

C. this

D. as

答案：

(答案→)A. it

B. that

C. this

D. as

解析：

试题分析:根据句意：在西方的人们将在圣诞节给亲戚或朋友买礼物视为一种规则。It 作形式宾语，指代 to buy Christmas presents. it可作为形式主语或是形式宾语，其后的不定式或从句为真正的主语或是宾语。