将句子与相应的图片匹配
A. 
B. 
C. 
D. 
⑴—Where's the dog? —Look! It's on the chair. {#blank#}1{#/blank#}
⑵—Is this your pencil? —Yes, it is. {#blank#}2{#/blank#}
⑶—Look at the blackboard. —Yes, Mr. Ma. {#blank#}3{#/blank#}
⑷—Is the ball under the box? —No, it isn't. It's on the box. {#blank#}4{#/blank#}
