Ответ:
1.)Because the cat kills many mice.
2.)One day thе oldest mouse says, "Come to my hole, mice.
3.)She suggests putting a bell around the cat's neck.
4.)No,because the younger mouse could not put a bell around the cat's neck
5.)The oldest mouse offered to give the cat a nice birthday present.
6.)On this day the cat finds a beautiful box in the corner of the kitchen.
7.)Yes, the cat was very glad
8.)Because, the bell rings and the mice always know when the cat is near.