解释下列句子中加下划线的文言字词。
鳏、寡、孤、独、废疾者____ 搜于国中三日三夜____
徒以有先生也____ 日扳仲永环谒于邑人____
I'd appreciate _______if you could come and help me once more and I always appreciate _______me with my English in the past.