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