...。 Can I help you? Twelve apples,please. 想买点什么？ 请给我12个苹果。 How much? One dollar. 多少钱？ 一美元。 What are these? They're watermelons. 这些是什么呀？ 是西瓜。 How many do you want? Ten watermelons, please. 想买几个？ 请给我10个。 Open your book...