Long years of hard work made possible for him to enter a key university in Beijing.A. tha

问题补充：

Long years of hard work made possible for him to enter a key university in Beijing.

A. that

B. this

C. it

D. which

答案：

A. that

B. this

(答案→)C. it

D. which

解析：不定式作宾语用it代替，真正宾语后置。 句意：多年努力使得他进入北京的重点大学成为可能。