A. 我家有一只宠物：用英语怎么说
We have a pet at home.我家有一只宠物
B. 我有一只宠物狗，它的名字叫皮皮，它很可爱懂事用英语怎么说
我有一只宠物狗，它的名字叫皮皮，它很可爱懂事
I have a pet dog. Its name is Pipi. It's very lovely and intelligent.
I have a pet dog, whose name is Pipi, is very lovely and intelligent.
C. 我家有一只狗一只猫用英语怎么说它们是我的宠物
There is a cat and a dog in my home.我家有一只猫和一只狗。
And they are my favorite pets！
他们是我最爱的宠物。
I love them so much！
我非常爱他们！