给下列句子排序,使其组成一段完整、通顺的对话。(首句已给出)({#blank#}1{#/blank#})Happy birthday!
( 1 )Hi, Binbin. This is my brother, Mike.
({#blank#}2{#/blank#})Nice to meet you, Mike.
({#blank#}3{#/blank#})Thank you, Mike.
({#blank#}4{#/blank#})I'm seven years old. Today is my birthday.
({#blank#}5{#/blank#})How old are you, Mike?
({#blank#}6{#/blank#})Nice to meet you too, Binbin.