阅读下面短文，掌握其大意，然后从方框中选出能填入文中空白处的最合适的单词，并将该单词的标号(A、B、C、D、E…)填写在文章下面对应题号的横线上。注意：方框中有多余的单词。

A. began   B.after   C. picked   D.heard  E.only   F.if G.and H.carry    I.first.   J.countries  K. held   L. before M. listened

Maybe the word "hello" is used more often than any other one in the English language. Every one in the United States and other   uses the word, again  again, every day of the week. The American inventor Thomas Edison is believed to be the      person to use "hello" on the telephone soon    the invention of it. At first, people   their words on the telephone with "Are you there?" They were not sure the small machine could really  voices. Edison was a man of few words. He wasted no time. The first time he   up the telephone, he did not ask   anyone was there. He was sure someone was there and     said "hello". From then on, "hello" is often     when you picked up the telephone.