How to write the composition for the first unit test of the first volume of the third grade of primary school students

I have two puppies at home. A black poodle named Coke is a female dog. I regard it as my sister. The other black fawn dog is called BOBO. It is a male dog and I regard it as my little brother. Who told my mother not to give birth to a little brother and sister for me?

BOBO is just three months old and very small. The two-year-old Cola is twice its size and older than it.

Coke has big eyes, long eyelashes, and a long tail. Its ears drooped down and its whole body was furry. It's summer now, so dad cut off its fur so that the coke will be much cooler. But my mother didn't like the naked look on Coke's body, and always laughed at Coke and said it was ugly. When Coke hears people saying it is ugly, he will lower his head and get under the sofa very unhappy.