No matter how busy he is he makes a rule to surf the Internet for information.A. himB. th

问题补充：

No matter how busy he is, he makes a rule to surf the Internet for information.

A. him

B. this

C. that

D. it

答案：

A. him

B. this

C. that

(答案→)D. it

解析：句意：无论他多忙，他都把上网查询信息作为一个规则。这里用it 作形式宾语，真正的宾语是后面的动词不定式，因为动词不定式太长，容易造成头重脚轻现象。故选D。

考点: 考查it的用法。