将左边和右边的句子连成对话。①Is this your bed? {#blank#}1{#/blank#} a. Hi, Joe.
②Are these your pens? {#blank#}2{#/blank#} b. No, it isn't.
③Your book is nice. {#blank#}3{#/blank#} c. Thank you.
④Hi, Peter. {#blank#}4{#/blank#} d. Six yuan, please.
⑤How much are they? {#blank#}5{#/blank#} e. Yes, they are.