阅读对话，根据横线后所给标点符号的提示，在横线上填写适当的句子，使对话完整．

Larry：What beautiful pictures!

Mike：No，they are not pictures．They are stamps．

Larry：Stamps？ （1）　　？

Mike：They're used for posting letters．

Larry：（2）　　？

Mike：I've got more than 700of them．

Larry：How long have you been collecting them？

Mike：I've been collecting them since I was five years old．

Larry：How are you going to do that？

Mike：I'm going to study art really hard and go to an art college．

Larry：I hope your dream can come true．

Mike：（3）　　．