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,

题目：

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.            .