几个句子结构的问题.1)首先 He is too wise not to answer either of the qu

几个句子结构的问题.
1)首先 He is too wise not to answer either of the questions.too to 如何分辨是否是表"太怎么样而不能",还是单独仅表程度?
2)they do so curled up with their heads exposed to the sun.exposed 是HEADS的后置定语吗?
3)you've read articles about the tremendous damae done to live &property by earthquake.同样此句的DONE 是个什么成分?
望一一回答.谢