根据上下文及图片提示，用适当的介词补全短文。
Look! This is my desk and chair. The toy taxi (出租车) is {#blank#}1{#/blank#} the desk. The book is {#blank#}2{#/blank#} the desk. The toy bike is {#blank#}3{#/blank#} the chair. The toy bus(公共汽车) is {#blank#}4{#/blank#} the chair. Look! There is a picture {#blank#}5{#/blank#} the desk. Where is my pencil? Oh, it's {#blank#}6{#/blank#} the chair.
