题目内容：

Do you think the problem is()?if you think hard,you'll find it()to work it out
a hard,easy b easy,hard c hard,easily d difficult easily

优质解答

选 A
find it 加形容词.排除C,D.根据意思,选A
用法：it +adj.to do sth.可以看作是动词find的宾语.
最后,我们发现在半个小时内完成这些工作是不可能的.
Finally,we found it impossible to finish the work in half an hour.