12.　 　My mother’s Mary. (提问：有两种答案)

11.　 　Your basketball’s on the floor. (提问)

10.　 David likes some hamburgers and salad.(一般疑问句)

9.　　　 There’s some cola in the bottle(瓶子). (一般疑问)

8.　　　 They’re their oranges in the case.(一般疑问句)

7.　　　 I know the baseball under the bed. (一般疑问句)

6.　　　 It’s my cousin’s pencil sharpener. (否定句)

5.　　　 You like watching TV. (否定句)

4.　　　 Gina takes some books to the classroom. (否定句)

3.　　　 We join the interesting club. (用she改写句子)