阅读短文, 选择正确答案。
Last week, Mrs Black went to London. She didn't know London very well, and she lost her way. Suddenly she saw a man near a bus stop. She went up to the man and said, "Excuse me! Can you tell me the way to the hospital, please?" The man smiled. He didn't know English. He came from Germany(德国). But then he put his hand into his pocket(口袋), and took out an English dictionary. He looked up some words. Then he said slowly, "I'm sorry, I can't understand you."