Section ADirections:In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.
A．At school. B．At home. C．In his office. D．On a farm.