选出相对应的答语⑴What are you doing?{#blank#}1{#/blank#} A. It's sixty yuan.
⑵How much is it?{#blank#}2{#/blank#} B. No, they aren't.
⑶Do you often come to the library?{#blank#}3{#/blank#} C. Yes, I do.
⑷What are they doing?{#blank#}4{#/blank#} D. They're playing ping-pong.
⑸Are they doing the high jump, too?{#blank#}5{#/blank#} E. I am making a call.