It is blue.

①cloud{#blank#}1{#/blank#}②fun{#blank#}2{#/blank#} ③health{#blank#}3{#/blank#} ④use{#blank#}4{#/blank#}

    This is a farm．It is{#blank#}1{#/blank#}and warm today．I can see a{#blank#}2{#/blank#}and her three children，three{#blank#}3{#/blank#}，two{#blank#}4{#/blank#}，a{#blank#}5{#/blank#}and a{#blank#}6{#/blank#}on the farm．There is a{#blank#}7{#/blank#}on the left．Behind the farm there are three high{#blank#}8{#/blank#}．In the sky there are{#blank#}9{#/blank#}and {#blank#}10{#/blank#}．