根据汉语意思，选择正确答案将句子补充完整。（只填序号）
A watching TV
B getting up
C playing football
D reading books
E making a cake
（1）I am ________________(读书).
（2）He is ________________(踢足球).
（3）They are _______________(看电视).
（4）My mum is ______________(做蛋糕).
（5）She is __________________(起床).