I found possible to answer all the questions within the given time.A. thatB. itC. thisD.

问题补充：

I found possible to answer all the questions within the given time.

A. that

B. it

C. this

D. what

答案：

A. that

(答案→)B. it

C. this

D. what

解析：it作found的形式宾语，真正的宾语是to answer all the questions within the given time.，possible作it的补语。