28.　 He thinks English is very important.

完成下列反意疑问句：

27.　 She likes pandas best.

26.　 My mother bought a kilo of meat this morning.

25.　 They were talking when the teacher came in.

24.　 The coat on the chair is mine.

23.　 Her sister will be back in an hour.

22.　 The boys were quiet because they were busy doing their maths problems.

21.　 There are five eggs on the plate.

20.　 I write to my father twice a month.

19.　 Li Ping’s father is a headmaster.