根据上下文的提示,给对话填上所缺的单词,每个空格只填一个单词.
Mother:Today is Grandma's ______.Let's go shopping now.
Son:Oh.great!Let's buy a bing birthday cake _____ Grandma.
Mother:Yes.Buy a big ________.
Son:Is it expensive,Mum?
Mother:I think so,_______ it's good,too.
Son:I think we must buy ____ nice food ____ supper.
Mother:Yes.Let's _____ a shopping list.We want to buy some meat,
fish,tofu and eggs.
Son:Do you want to buy some apples ,bananss and oranges?
Mother:Yes,I ______.
Son:Mun,don't forget to buy two bottles _____ coke.
Mother:Of curse not.
Son:Great!Let's say and sing"Happy birthday"to Grandma then.She will be very _______.