Read the following passage and choose the correct answer for each of the questions. Write your answers (A, B, C or D) in the spaces that follow.
I arrived in London at last. The railway station was big, black and dark. I did not know the way to my hotel, so I asked a porter. I not only spoke English very carefully, but very clearly as well. The porter, however, could not understand me. I repeated my questions several times and at last, he understood. He answered me, but he spoke neither slowly nor clearly. "I am a foreigner," I said. Then he spoke slowly, but I could not understand him. My teacher never spoke English like that! The porter and I looked at each other and smiled. Then he said something and I understood it. "You'll soon learn English!" he said. I wonder. In England, each man speaks a different language. The English understand each other, but I don't understand them! Do they speak English?
[Source: L.G. Alexander, New Concept 2,. Longman, 1974]