ExercisesContentsDownloadsUNIT 18: BASIC PHRASAL VERBS 基础短语动词Question 1 / 21请完成全部题目,最后查看答案与解析VOCABULARY · A1 Exercise 1 · Exercise 1Choose the correct option for each gap.You need to _____ the stairs one floor.Ago downBget offCstand up保存并进入下一题 →