ExercisesContentsDownloadsUNIT 18: BASIC PHRASAL VERBS 基础短语动词Question 1 / 21可以返回上一题修改答案,完成全部题目后查看解析VOCABULARY · A1 Exercise 1 · Exercise 1Choose the correct option for each gap.You need to _____ the stairs one floor.Ago downBget offCstand up← 上一题保存并进入下一题 →