[解析]
语境推理题.
(1)What's the matter.根据上一句 you look unhappy.你看起来不高兴.可知说 怎么了?故答案是:What's the matter.
(2)Can you help me.根据下一句 Of course.当然,可知说 你能帮我吗?故答案是:Can you help me.
(3)How do you study.根据下一句 I usually listen to the teachers and take notes carefully in class.我通常在课堂上听老师讲课,认真记笔记.可知说你怎么学习的? 故答案是:How do you study.
(4)Good idea.根据上一句 You can check your notes with other classmates' after class.你可以在课后和其他同学核对你的笔记.可知说好主意. 故答案是:Good idea.
(5)Thanks.根据上一句Of course. We should help each other and learn from each other.当然.我们应该互相帮助,互相学习. 可知说谢谢. 故答案是:Thanks.