题目内容：

阅读下面材料，在空白处填入1个适当的单词或括号内单词的正确形式。

Though Chinese is 1.(old) than English, English is spoken 2. many people around the world every day. English speakers are always 3.(make) new words and we should be able to know where most words come from.

Sometimes, however, no one may 4.(real) know where a word comes from. Did you ever think about why hamburgers are called hamburgers, especially when they are not made with ham? About a hundred years ago, some 5.(man) went to America from Europe. They came from a big city in Germany 6.(call) Hamburg.

They did not speak good English, 7. they ate good food. When some Americans saw them 8.(eat) round pieces of beef, they asked the Germans what it was. The Germans did not understand the question and answered, ＂We came from Hamburg.＂ One of these Americans owned 9. restaurant, and had an idea. He cooked some round pieces of the beef like the man from Hamburg ate and 10.(sell) them in many countries around the world.