He's been skating for hours(改为一般疑问句）
_____ he been skating for ______ ________hours?
用所给词的适当形式填空
Do you like these books or those______(one)
The backpackmight be Li Ying's.(对Li Ying's提问）
______________ the backpack ________?
Those CDs belong to Alice and Grace.(对Alice and Grace提问）
______ _________those CDs ______________?
He's been skating for hours(改为一般疑问句）_Has____ he been skating for hours?用所给词的适当形式填空Do you like these books or those_ones_____(one)The backpackmight be Li Ying's.(对Li Ying's提问）____Whose____might______ the backpack ___be_____?Those CDs belong to Alice and Grace.(对Alice and Grace提问）____whose__ ___do______those CDs
