—I am afraid I cant finish the book within this week.—.A. Please go aheadB. Thats all ri

问题补充：

—I am afraid I can finish the book within this week.

—.

A. Please go ahead

B. Thats all right

C. Not at all

D. Take your time

答案：

A. Please go ahead

B. Thats all right

C. Not at all

(答案→)D. Take your time

解析：go ahead“继续干吧”；Thats all right“没关系；不用谢”；Not at all“别客气，没什么”，对感谢的回答；take ones time“要用多少时间就用多少时间；不着急”。由语境可知，应选D项。