He foundvery interesting to ride a horse on the farm.A. this B. that C. itD. it is

问题补充：

He foundvery interesting to ride a horse on the farm.

A. this

B. that

C. it

D. it is

答案：

A. this

B. that

(答案→)C. it

D. it is

解析：在英文中动词不定式作为宾语，后跟形容词作为补语，通常用it作为形式宾语，真正宾语位于句尾，故本题选C。