Question

【题目】—Are they having a party now?

—Yes, ________．

A. they do B. they are

C. they have D. they will

Answer 1

【答案】B

【解析】

句意“-他们现在在举行派对吗？-是的”。am/is/are doing表示现在进行时，一般疑问句将am/is/are提前，肯定回答用“Yes，主语+am/is/are”.故选B。