阅读短文，选择正确的选项。
   It was Saturday.Chen Jie and her mother exchanged roles（交换角色）.Chen Jie did her mother's work and her mother did Chen Jie's work.Chen Jie got up at six o'clock in the morning.She cooked breakfast.Her mother read books and did homework in the study.Chen Jie wanted to watch TV，but the house was in a mess（不整洁）.So she cleaned every room in the house.Then she washed her clothes.At last，she sat on the sofa.She said to her mother，"Mum，I'm so tired.It's not easy to be a hard-working mum."Her mother said，"It's also not easy to be a hard-working student."They understood（理解）each other more than before.
（1）Chen Jie exchanged roles with her

C

C

.
A．father
B．brother
C．mother
（2）Chen Jie wanted to

A

A

after she cooked breakfast.
A．watch TV
B．clean the house
C．sit on the sofa
（3）Her mother read books and

B

B

.
A．cooked breakfast
B．did homework
C．watched TV
（4）At last，Chen Jie was very

C

C

.
A．happy
B．sad
C．tired