Finally they succeeded -------- the problemA\solve B\ to solve C\ in solve D\ solved（一定要解析,
问题描述：
Finally they succeeded -------- the problem
A\solve B\ to solve C\ in solve D\ solved
（一定要解析,
答
这个答案正确吗？我查了牛津词典，Succeed 的用法是in sth / doing sth,意为成功做某事，如果是to 的话，应该是succeed to sth意思是继承（头衔，财产等）。
我没找到选项里的用法，所以不知道题目是否对
答
B succeed to do
答
貌似没有答案,应该是 in solving,因为用法是 succeed in + doing sth
答
in solving
succeed in doing sth