题目

根据原文《新概念》填入正确的单词。Their sleeping bags werewarm and comfortable, so they all slept . In the middle of thenight, two boys woke up and began . The tent was full ofwater! They all leapt out of their sleeping and hurried outside... The stream wound way across the field and then flowed rightunder the tent! 答案：【1】soundly【2】shouting【3】bags【4】its三个________为边构成直角三角形．