Questions:

1 Why doesn't Micky's Mum go to the park with him?

2 What happened to Micky that day?

Micky:No school today. I want to swim.
Micky:Mum, please, please!Will you take me to the park? I want to swim.
Mum:No, not today. I'm going to the supermarket.
Micky:Dad, please, please! Will you take me to the park? I want to swim.
Dad:No, not today. I'm going to the bookstore.
Micky:Grandpa, please, please! Will you take me to the park? I want to swim.
Grandpa:No, not today. I'm reading the newspaper.
Micky:I'll go on my own(我自己去）. It's fun. Oh no! It's raining cats and dogs（倾盆大雨）! It's no fun! 
Mum:Are you OK?
Micky:I'm.... O... A-a-a-ti-shoo!