— Im afraid I cant finish the book this week— .A. Please go aheadB. Thats right C.

问题补充：

— Im afraid I can finish the book this week.

— .

A. Please go ahead

B. Thats right

C. Not at all

D. Take your time

答案：

A. Please go ahead

B. Thats right

C. Not at all

(答案→)D. Take your time

解析：take your time意为不着急，不慌忙，从容不迫。