It's Sunday. Mike does not go to school. But he is not at home. He is now sitting on a bus. He is going shopping. An old woman gets on the bus. Mike stands up and says to her,"Come and sit here, please."The old woman goes over and sits down. She says,"Thank you very much, dear little boy." The bus stops near the shop. Mike says"Goodbye"to the old woman and gets off the bus. The old woman smiles and says"Goodbye"to him, too. What is Mike going to do? He is going to   _  .
buy something get on a bus see a doctor study English