A. 我家有一隻寵物：用英語怎麼說
We have a pet at home.我家有一隻寵物
B. 我有一隻寵物狗，它的名字叫皮皮，它很可愛懂事用英語怎麼說
我有一隻寵物狗，它的名字叫皮皮，它很可愛懂事
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. 我家有一隻狗一隻貓用英語怎麼說它們是我的寵物
There is a cat and a dog in my home.我家有一隻貓和一隻狗。
And they are my favorite pets！
他們是我最愛的寵物。
I love them so much！
我非常愛他們！