补全对话。 A: Hello, Tony!  Nice to meet you! B: Hi, Bob! Nice to meet you, too! A: You look terrible.1_____________ B: Oh,I am always tired these days. A:2________________________________________________ B:I think so. When I am in Grade Three, everything is different. A: Really? B: Yes, we used to have music classes and we could listen to more songs to relax, but now we don't have music classes and we have to have tests every day. A: Don't worry, Tony.3____________________________________ B：4____________________________________ A: Just so-so.I am going to have an English exam.  I have to study for this test. B：5________________________ A:I study by doing more exercises. B：Good luck! A: Thank you! Then see you later. Maybe you are too stressed out. You can listen to the tape. What's wrong with you? What can I do for you? How's it going with you? How do you study for the test? If you really feel tired', you can stop to rest.