1. 听录音，给下列句子排序。

Let's climb mountains, OK?

Are you free on Sunday?

Sounds great! See you then.

Yes, I am. What's wrong?

Good idea! Let's meet at the foot of the mountains.

1. Are you free on Sunday?<br />2. Yes, I am. What's wrong?<br />3. Let's climb mountains, okay?<br />4. Let's climb mountains, okay?<br />5. Let's climb mountains, okay?<br />4. Good idea! Let's meet at the foot of the mountains.<br />5. Sounds great! See you then!