This is probably the only way we can imagine the current economic problems in Europe.A.

问题补充：

This is probably the only way we can imagine the current economic problems in Europe.

A. solving

B. to solve

C. solved

D. solve

答案：

A. solving

(答案→)B. to solve

C. solved

D. solve

解析：

这题考查不定式作定语的用法，这里填to solve 是修饰the only way, 其中的we can imagine是定语从句修饰the only way,句意是：这可能是我们能想象的唯一能解决现在的经济问题的方式了。