Answer the questions(根据以下内容回答问题)
A Free Meal
"I'm hungry," Pat said to his friend, Mike. "Let's have a meal somewhere."
They walked down the road until(直到)they came to an expensive restaurant. "This will be fine," Pat said. "Just the place we want." He opened the door and they went inside.
A waiter came up to them at once. "A table for two, gentlemen?" he asked. "Yes. The best table you have." He took them to a table near a window. He gave them the menu and went away. Pat and Mike looked at the menu carefully, then ordered the most expensive dishes and a bottle of very good wine.
An hour later, they had almost finished their meal. It was one of the best meals they had ever had, and now they were eating their dessert(甜点). Suddenly Pat looked carefully at his dish. "What's this?" he cried and pointed at something small and black in the dessert. The waiter hurried to their table. "Look at this!" Pat said to him in a very loud voice. "There's a dead fly(苍蝇) in my dessert. How terrible(可怕的)! I thought this was a good restaurant, but I was wrong."
The waiter was very embarrassed. "Please, sir, do not speak so loud. I am so sorry about the fly. I'm afraid accidents happen sometimes, even in the best restaurants. We shall not, of course, charge(收费)you for your meals."
Soon after this, Mike and Pat were walking past a hotel. "Let's go in and have a drink," Pat said. "I've got one fly left(剩余)."