【题目】The way he thought of _________ the problem is very useful.
A. solving B. to solve
C. solve D. answering
在线课程【答案】B
【解析】考查动词不定式作定语。定语从句ｈｅthought of修饰先行词the way，ｈｅ前面省略了that。特殊用法：the way to do sth=" the" way of doing sth做某事的方法。句意：这是他想起来的解决问题的最有用的方法。根据句意可知选Ｂ。