补全对话，在空白处填上适当的句子，使对话完整。
(Rick is studying with Aler at his home. )
R: Hi, Alex! We've been studying for hours. Let's relax for a moment, OK?
A: Sure. I feel a little tired and I want to have a rest too.
R: Why not listen to the music and 1 ？
A: Something to drink? Great! I'm really thirsty.
R: I'd like some juice. 2 ？
A: I want some water.R: OK. Here you are.
A: Thanks. Er...Rick, would you mind turning down the music? I want to talk to you.
R: Oh, I'll turn it off 3 ？
A: I am very stressed out these days. I am afraid 4
R: I don't think you may fail your exam. You've been studying very hard.
A: But my reading is not very good.
R: It can't be difficult. You just need to be more careful while reading. So don't worry.
A: Thank you for encouraging me.
R: 5