【答案解析】[听力原文]6-7 W: How's your exam? M: I failed again. W: Why? Did you oversleep again? M: No, I didn't. W: Then, what's wrong with you? M: I can't tell you. W: Come on. I'm your best friend. You can tell me and I can help you. M: You know, this time I made full preparations, but John told me that he couldn't pass the exam since he had to spend all his spare time looking after his mother in the hospital. So I let him copy my answer during the exam. And we were caught by the teacher. Both of us failed.