根据提示内容补全下面的对话。 Shijiazhuang → Beijing (278 kilometres) classroom → gym (1 kilometres) home → school (2 kilometres) 1. How far is it from Shijiazhuang to Beijing? It's about two hundred seventy-eight kilometres from to . 2. How from your home to school? It's about from my home to school. 3. from the classroom to gym? It's about .