[ti:UNIT 6 Let's Go! Lesson 45: Cheap or Expensive?] [00:01.87]UNIT 6 第六单元 [00:03.69]Let's Go! 我们出发吧! [00:05.95]Lesson 45: 第45课: [00:08.03]Cheap or Expensive? 便宜还是贵? [00:11.43]1. [00:12.95]How much is ____? 多少钱...