句子排排队。（请把下面的句子排列成通顺的一段话）
（1）I’m going to the library. And you ?
（2）OK.
（3）Hi ,Lucy. Where are you going to do on Sunday?
（4）What do you want to buy?
（5）I am going to the supermarket.
（6）Hello，Li Ming.
（7）I want to buy some fruit.