16．　 My backpacks are red and blue.(对划线部分提问)

_____________　 ___________are your backpacks?

15．　 The keys are under the dresser.(对划线部分提问)

___________　 __________ the keys?

14．　 These aren’t ID cards.(变为单数形式)

____________ isn’t　 ______________ ID card.

13．　 Are those your books?(作否定回答)

No, ______________　 ______________.

12．　 Is he your grandfather?(作肯定回答)

Yes, ______________ is.

根据所给提示，完成句型转换，每空一词，含缩略词。

11．　 Paul is my pen friend.(变为一般疑问句)

　　 ______________ Paul ______________ pen friend?

10．　 Mark, this is ______________ cousin, Bob. (用“me”的正确形式填空)

9．　 Jim and I ______________ good friends. (用be的正确形式填空)

8．　 aren’t______________(写出同音词)

7．　 he ______________(写出物主代词)