---Everybody is playing on the playground. Can I join them , Miss Lin?
--- Not until you have pleted the Maths exercises.
A. Why not?
B. Will you?
C. I hope so.
D. I’m afraid not.
网友回答
A. Why not?
B. Will you?
C. I hope so.
(答案→)D. I’m afraid not.
解析：根据上下文内容可知答案为D