补全下面对话。Tom:What{#blank#}1{#/blank#}can you see?
Kate:I can see the{#blank#}2{#/blank#}.
Tom:What are they doing?
Kate:They are{#blank#}3{#/blank#}trees.
Tom:Can they{#blank#}4{#/blank#}?
Kate:Sure.What can you see?
Tom:I can see a koala bear.
Kate:What is it doing?
Tom:It's{#blank#}5{#/blank#}in the tree.