Cho em hỏi bài này làm sau vậy

on as 13. I had no idea about the dangers of tsunamis hil A. as soon as B. while C. when D tit 14. Aften they moved to their new house; they planted a lot of trees in the garden. A. While B. Anter C. Until D. Before D. Before 15. Don't go away until you finish / have finished cleaning ...