1．His backpack is on the desk．（就劃線部分提問(wèn)）

_________ _________ his backpack?

2．Jack eats hamburgers for dinner．（變?yōu)榉穸▎?wèn)）

Jack _________ _________ hamburgers for dinner．

3．Her pants are white and bIack．（對(duì)劃線部分提問(wèn)）

_________ _________ are her pants?

4．My father plays ping-pong well．（變成一般疑問(wèn)句）

_________ his father _________ ping-pong well?

5．This is all orange．（改為復(fù)數(shù)句子）

       ____________________________________?