根据所听问句的先后顺序,将其答语排序{#blank#}1{#/blank#}They are swimming on the pond.
{#blank#}2{#/blank#}At half past seven.
{#blank#}3{#/blank#}No, it will snow in Harbin.
{#blank#}4{#/blank#}It's twelve o'clock.
{#blank#}5{#/blank#}I'm going to play chess with my sister.