Dear Chris ，
l have just come back home and when unpacking my luggage，I find that CD stayed in my room. I don't pay back to you, I'm writing to express my apology and thanks.
To begin with, I'm a senior student, so that not a great many spare times. what's more, I come back to China from American now, and don't know this thing .for this, I'm sorry and I sincerely hope you can forgive me.
Last not but least. I know that you like the traditional music CD of China. so I want to send a music CD to you and hope you can like it. On the one hand, I hope you can accept and like it .on the other hand, I hope we keep in touch with each other.
I'm looking forward to your reply.