单选题 —Who has been planning the dance?
—Everyone in the class ______.
A. is B. has C. have D. are

【正确答案】 B
【答案解析】问话的时态是现在完成进行时，答话的时态应与其一致；everyone要求单数的谓语动词。谁在筹划这个舞蹈?全班。