题目内容：

Ⅳ. 阅读下面的对话，并根据对话内容，用合适的单词填空。

Toby: You look healthy, Mary.

Mary: Thank you, Toby. I swim every day.

Toby: How1.do you swim each time?

Mary: For forty minutes.

Toby: Is that your favourite sport?

Mary: Yes, it is. Do you like 2. , too?

Toby: Yes, I do. But my favourite sport is volleyball.

Mary: Your dream is to be a volleyball 3. , right?

Toby: You are right. I want to play volleyball well.

Mary: Then you need to eat more 4. food. That is very important.

Toby: Yes. I drink milk and eat some meat every day.

Mary: 5. , too. I also like milk and beef.