基本信息
unit 19 public transportation 交 通part one: expressions1.can’t you see there’s a line?你没有看到有一条线吗？2. you haven’t taken the bus before?你以前没有坐过公车？3. besides, you should let old people on first.除此之外，你该让老人先上（车）。4. excuse me, how do i get to wall street?
