推荐回答（2个）
一般都用of
用to的只是个别的，记住就行了，the answer to the question;the key to the door等
补充：answer to question,key to door,solution to problem,response to inquiry,reaction to proposal,reply to letter,the approach to a bridge,the approach to science,The access to education,The access to medical care,advisor to the Prime Minister,invitation to party,
guide to action,limitation to life,accessory to school，introduction to passage，bars to development,the barrier to progress等等
但是有些都不常用，不用全记住，记住常用的就行了！
of 是一种所属关系,意思是“(属于)...的”；而to表示归属、附加，意思是“归于、属于”的意思。
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