用所给的单词写英语句子（要用上）
问题描述：
用所给的单词写英语句子（要用上）
1.今天下午,当我在教室做作业时,我听见两位同学在争论(what,hear sb.doing,argue about)
2.他现在在三号码头,他半小时前动身的(leave,ago)
3.失火了,小男孩拨打了119(when,dial,there to be)
答
1.This afternoon when I was doing the homework in classroom,I heard two classmates arguing about some questions.(我觉得你的题干有问题,应该是when,而不是what)
2.Now he is at dock 3,half an hour ago he left for.
3.When it's fire,the little boy dialed to 119.
(汗,很难理解为什么用there to be)