补全下面的对话。 W:Can I help you?
M:Yes.I want to buy a {#blank#}1{#/blank#}.
W:How do you like this {#blank#}2{#/blank#}one?
M:It's {#blank#}3{#/blank#},but it's expensive.
W:How about this red one?It's only {#blank#}4{#/blank#}yuan.
M:It's {#blank#}5{#/blank#}.I'll take it.