在每个空格填入一个适当的句子，使对话完整，通顺。
T: Teacher S: student
T: You look worried, Jim. 76 ?
S: I have some problems, I need your help. 77 ?
T: Sure. What are your problems?
S: Well, I want to study English well. But I always can’t do that. What should I do?
T: 78 .
S: That sounds like a good idea. I’ll try. I have another problem. 79 last year , but now I am heavy. What should I do?
T: Why don’t you do more exercise to keep fit ?
S: Good. I will run every morning. I feel better now. Thank you very much.
T: 80 .
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解析：主要根据上下一致，前后句子意思连贯。