After working for two hours I foundimpossible to complete the paper in time.A. meB. thisC

问题补充：

After working for two hours, I foundimpossible to complete the paper in time.

A. me

B. this

C. that

D. it

答案：

A. me

B. this

C. that

(答案→)D. it

解析：考查形式宾语。在英语中只有it可以充当形式主语和形式宾语。本题中的it指代不定式to complete the paper在句中做found的宾语。故D正确。