根据图片提示圈出正确的单词。
A: Look! This is my cat.
B: Oh, it's a black {#blank#}1{#/blank#}(dog /cat). What's that, Jim?
C: That is a red {#blank#}2{#/blank#}(hat /bag). What's this?
D: This is a blue {#blank#}3{#/blank#}(cap /hat). What's that?
E: That is a {#blank#}4{#/blank#}(door /book). It's green.