为下列句子，选择正确的答语。

⑴Is he helpful?                    A. Yes, I do.

⑵Do you often play the PiPa?      B. No, he isn't.

⑶What would you like to drink?    C. No, there isn't.

⑷What can you do for the party?   D. I'd like some water.

⑸Is there a river?                E. I can sing songs.