一、语法选择（每小题1分，共15分）
阅读下面短文，按照句子结构的语法性和上下文连贯的要求，从题中所给的A，B，C和D项中选出最佳选项，并在答题卡上将该项涂黑。
I am going to tell you 1 unbelievable thing that happened in my restaurant today.
This afternoon a poorly-dressed gentleman 2 into my restaurant. 3 knew who he was. 4 sitting down, he ordered a lot of food. He 5 like a wolf. We wondered why he was so hungry. We were very 6 that he finished two orders of food in a very limited （有限的） time. We doubted if the man was able 7 the food. When he 8 to pay the bill, the gentleman asked if we would mind 9 just a few minutes. Then we were shocked to see that he 10 a letter, a million pound bank-note.
