The water was -too- dirty -for- -us- to drink可以帮我解答另一个问题吗I have been down for two hours I have been down -------------- two hours没有其他提示？一个for怎么变出三个词来？呵，你确定原文是这样的？是这样的，帮我看看应该填什么，谢谢！I have been down -as---long---as- two hours