She likes the music _____ she likes to sing along with.

A．that              B．in which           C．what             D．who

Mr Smith goes to the town (城镇) to see his son, Tom. Tom is studying music in a school there. He tells his father he does well and his father is very happy. That evening Mr Smith buys two tickets for a concert (音乐会). They get there early after dinner. They’re sitting in the hall (大厅) and listening to them playing. The music is beautiful and Mr Smith enioys it very much. But he finds(发现) his son doesn’t like it at all. Mr Smith wants to know something about Tom. So he asks, “Do you know the music?” “Yeah,” answers Tom. “ And what’s the musician playing now?” Mr Smith asks. Tom doesn’t know how to answer it. He thinks hard and then says, “… the piano.”
【小题1】Mr Smith’s son is studying    now.

She likes the music _____ she likes to sing along with.