增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；

2）只允许修改10处，多者（从第11处起）不计分。

    Yesterday I stepped into a restaurant for lunch. As I was waiting my order to come, I noticed the old man in a wheelchair roll himself over to a table. No one and me seemed to notice him. I got up and go over to his table and asked if that I could get him something to drink. He smiled and said,“Thank you. You are generously. I'd like any orange juice, please.”When I was getting ready to leave, I walked by the old man's table to saying goodbye. He thanked me again and told me I had made his days, coming over and helping him out. I gave him a hug and told him he had made my day, either.

马丁·路德这样描述他在奥古斯丁修道院塔楼的“福音体验”：“我夜以继日地思索‘上帝公义’的问题，直到我看出它与义人必因信得生的关系。不久我便明白‘上帝公义’真正指的是上帝以恩惠和怜悯使我们因信称义。我立即感到自己已得重生，乐园的门大开，让我进入。《圣经》的一切话语有了新意义。”马丁·路德“福音体验”的重大意义在于（  )

4，8，____，16，____