26.　　 I like collecting stamps and singing. (改为否定句)

25.　　 They are going to see a film tomorrow. (对画线部分提问)

24.　　 I’d like to join them.(改为一般疑问句)

23.　　 The children have school today. (改为否定句)

22.　　 It is a fine day today.　 (改为感叹句)

21.　　 I know his telephone number. (改为一般疑问句)

20.　　 Please turn off the light. (改为否定句)

19.　　 Su Yang is asking Ben some questions. (对画线部分提问)

18.　　 Do you like spring? (加上winter 改为选择疑问句)

17.　　 I like autumn best. (改为否定句)