对on,the,bed提问

1。Where is her backpack?

  Her backpack is on the bed。 

2。Where is my mother's dress?

  My mother `s dress is on the bed。

3。Where is your sweater?

  My sweater is on the bed。

4。where does he put the bags?

  He puts the bags on the bed。

这是一个特殊疑问句,on the bed （在床上）是个地点,所以用表地点的疑问词 where。