根据下面短文内容，在短文的空格处填一个恰当的词，使短文完整、通顺。

Look at the photo! The girl is Alice and the boy is her brother, Mike. They are at No. 1 Middle School. Their are teachers, their father is a P. E teacher, their mother is an English teacher.

On weekdays, Alice and Mike are busy. They go to school Monday to Friday. They have Chinese, math, English, geography, history and so on at school. Alice's favorite is music. She likes music it's relaxing for her. Mike likes science. His science teacher, Mrs. Liu always says is very useful. Mike thinks it is difficult interesting.

On weekends, Alice and Mike are . So they can TV, play computer games and do sports at home.