People go there _when_ they need _help with_ their problems.第二空为什么不填to help with
问题描述：
People go there _when_ they need _help with_ their problems.第二空为什么不填to help with
答
时间状语从句 need做实意动词，need to do sthneed做情态动词，need do sth
答
这里的help是名词