用is there a piano in sitting-room their
问题描述：
用is there a piano in sitting-room their
答
Is there a piano in their sitting-room 他们客厅里有钢琴吗
答
原句应该是：Is there a piano in their sitting-room?吧？
他们客厅里有架钢琴吗？
答
客厅有钢琴么?