Melba likes to listen to her stereo. Thad likes to listen to his

Melba likes to listen to her stereo. Thad likes to listen to his. They both enjoy using their headphones. They are brother and sister.(single sentence)
【正确答案】:Melba and Thad, who are brother and sister, enjoy listening to their stereos by using their headphones.
【题目解析】:p92