根据对话内容， 选择恰当的句子补全下列对话。（每小题1分，共5分）
(Miss Yu is giving a class. Suddenly some bottles drop out of a student’s desk.)
T: What’s the noise there?
S: Sorry, Miss Yu .     
T: ( Walking over to take a look) Oh, so many bottles!
S: I’m collecting bottles.
T:      
S: Because I want to make toys out of them.
T:       If so, why not put a big paper box at the back of our classroom? Then your classmates can help collect the bottles.
S: Thanks for your advice.
T:      
S: Yes, quite a few.
T:       
S: Of course. I’ll bring a few here tomorrow.
T: Perfect!

That’s an interesting idea. We can’t wait to see the toys you’ve made. Some bottles dropped onto the floor. Can you show some to us one day? Could you help us make some toys? Have you already made some toys? Why do you collect bottles?