Question

6. 一   football is this?

   —Sorry,I don't know. Maybe it's Jack's.

   A. Who     B. Whose

   C. Where   D. When

Answer 1

6. B

6. B  本题考查特殊疑问词的用法。答语中提到了“对不起，我不知道。可能它是杰克的”。由此可推断问句问的是“这是谁的足球”。故答案为B。