第1个回答 2012-08-11
I am sorry to reply to you now. I was practice playing the piano just now.
第2个回答 2012-08-11
Sorry for the late reply to you,I have to practice the piano.
第3个回答 2012-08-11
I'm very sorry for not replying you until now，I was playing piano just now.
第4个回答 2012-08-11
i am sorry to reply you nou ,i was practicing the paino just now
第5个回答 2012-08-11
I'm sorry to get back to you now, just now I practice the piano