英语题：根据对话内容,填上合适的词,使对话意思完整及正确.
Lily： I want to _______some apples.
Dora： ______ do you want to buy that for?
L： I want ________ make apple pie for dinner.
D： Look!The apples are over there.What about these ________?These ones _______ cheap.
L： I ______ these ones are bigger and _______ _______ those ones.
D： Look ______ those ones.They're the _______and cheapest of all.Ok.Let's take those ones.
快!