题目内容：

there are many places of interest to visit to.最后的TO是否需要 there is a chair to sit on
最后的on是否需要

优质解答

第一个to不需要 因为visit是及物动词
句子还原就是 to visit (many places of interest)
第二个 on需要 因为sit是不及物动词
sit on the chair