— I’m afraid I can’t finish the book within this week.           —______.

A. Please go ahead            B. That’s right       C. Not at all      D. Take your time

—I'm afraid I can't finish the book within this week.

—________.

A. Please go ahead　　 B. That's all right　 C. Not at all　 D. Take your time

---I'm afraid I can't finish the book within this week.

---________.

1. A.
   Please go ahead
2. B.
   That's all right
3. C.
   Not at all
4. D.
   Take your time

---I’m afraid I can’t finish the book within this week.
---__________

1. A.
   Please go ahead
2. B.
   That’s right
3. C.
   Not at all
4. D.
   Take your time