How many CDs ___Jack ___?
Listen! A girl ____ in the next room.
参考答案:How many CDs (did)Jack (need/buy)?
Listen! A girl (is reading/singing) in the next room.
Listen! A girl ____ in the next room.
参考答案:How many CDs (did)Jack (need/buy)?
Listen! A girl (is reading/singing) in the next room.