在下面对话的空格内填上一个适当的词，使对话意思完整，语句正确。
A: Mum, I shall not have lunch at home today.
B: Why not, Linda?
A: I want to go to the pet (宠物) shops at noon with my classmates. Most of the students in our class have their
own pets. Mum, as you know, I 1. got a pet yet.
B: What 2. of pet do you want to have?
A: A dog 3. a cat. I haven't decided yet.
B: You'd better not keep a dog in our flat. It would make much noise. And a dog has to go out every day, and
there isn't a 4. near our building. And the dog food is expensive.
A: Then I'll have a cat. Cats are cheaper than dogs, and they are quiet, too.
B: Yes, cats are easier to 5. .
