Read and answer the quetions:
In a cold day, Miss Hoa go to her student's house-Dao'house. Miss Hoa pressed the doorbell and Dao's mom opened it...
Miss Hoa: Oh! Hello. Are you is Dao's mom?
Dao's mom: Yes, I am. And you is Dao's teacher?
Miss Hoa: Yes, I am
Dao's mom: Please come in and take a sit.
Miss Hoa: Thank you
Dao: Hello, Miss Hoa.
Miss Hoa: Hello. Are you cold?
Dao: No, I am not. This sweater make me feel warm and comfortable
Dao's mom: Do you want some caocao.
Miss Hoa: Yes.
Dao's mom: Ok.
And then she take some hot caocao for teacher. They talk and laugh all that time. When the teacher is come home, Dao's mom is very angry. She say:
-Dao! To the living room now!
-Yes mom...
-Why your score so bad!
-Be...Because, I forgot this division...
-So...do your homework now! If done, you will have your dinner...
1) Why Dao's mom is angry?
2) Why teacher still happy with Dao when she have a bad score???