在吗英文怎么写

　　Are you there? Are you both listening?

　　你在听我说吗？你们两个都在听吗？

　　At first, people had greeted each other on the phone with,@ Are you there?

　　起初，人们拿起电话后首先相互询问：你听见了吗？

　　Stu, is that true?. are you there?

　　斯图，是真的吗？你在那吗？