翻译(根据中文提示完成句子)
【小题1】他们在跳舞的时候，我们在唱歌。
We ________________ ________________ while they ________________ ________________.
【小题2】昨天晚上发生火灾时你正在做什么？
What ________________ you ________________ when the fire ________________ last night?
【小题3】现在他们正在听音乐会。
They are listening to the concert ________________ ________________.
【小题4】事实上，他训练很刻苦，以至于脚都受伤了。
________________ ________________, he trained so hard that he hurt his foot.
【小题5】昨天彼得如此累以至于到八点半才醒来。
Peter was so tired that he didn't ________________ ________________ until half past eight yesterday.