1. (2021六下·赤坎期中) 阅读短文，回答问题。

Mr Green has a cat and a dog. The cat is big and the dog is small. He likes them very much, Last Sunday, Mr Black came to see him. He saw two holes(洞) in the wall, a big one and a small one. He asked, "Mr Green, why are there two holes in the wall?" "Let  the dog go through the small hole, and the cat go through the big one," Mr Green answered." But they can go through just one hole," said Mr Black." How can the big cat go through the small hole?" said Mr Green.

1. （1） Is Mr Green's cat small?
3. （2） When did Mr Black come to see Mr Green?
5. （3） What did Mr Black see in the wall?
7. （4） Why were there two holes in the wall?
9. （5） Is Mr Black right?