tom and his brother are talking to(a policeman)汤姆和他的兄弟正在同一个警察交谈,
对警察提问,即汤姆和他的兄弟正在和谁交谈?
1.确定疑问词.划线部分为人物,疑问词选择Who.
2.将系动词提前,再按照原来的顺序抄下来.
Who are Tom and his brother talking to?