Directions:In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked, and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
A．Tom has changed his cell phone number. B．Tom will teach history class at that night. C．The woman’s cell phone is always unreachable. D．The man can help the woman give the ticket to Tom.