图文配对。
{#blank#}1{#/blank#}The children are playing football .
{#blank#}2{#/blank#}The two cats are climbing a tree .
{#blank#}3{#/blank#}The pigs are eating fruit and vegetables .
{#blank#}4{#/blank#}They are dancing .
{#blank#}5{#/blank#}They are running .
， but the bell{#blank#}3{#/blank#} 
.