根据小诗，回答问题。
Father is in the study reading.
Mother is in the kitchen cooking.
Brother is in the garden playing.
Sister is doing some washing.
I'm in the dining room eating.
We are all busy in the evening.
1. How many people are there in my family?
2. What is my mother doing?
3. Where's my father?
4. What's my sister doing?
5. Are we all free in the evening?
