问题补充：
We all found to play the game.
A. that interested
B. this interesting
C. it interesting
D. it’s interesting
答案：
A. that interested
B. this interesting
(答案→)C. it interesting
D. it’s interesting
解析：主语+find +it +adj+to do sth，表示发现做某事是怎样的，其中it 作为形式主语，故选答案为C
