...Unit 6 Topic 1 We're going on a three-day visit to Mount...
1.spring field trip春游 2.go on a visit去旅游 go on a three-day visit to sp.到某地做个三天的旅游 3.find out查明,查出,找到 4.the cost for the train / bus / plane火车/汽车/飞机的开销 5.total time总时间 6.decide (not) to do sth决定(不)做某事 decide on sth决定,选定 7.make a...