Fill the right words in the blank

Answer:
To complete the letter with the appropriate word choices, I’ll fill in the blanks with the options that best suit the context:
9. (C) which
10. (A) carefully
11. (B) While
12. (C) would
13. (A) understand
14. (D) any
15. (C) resources
The completed letter would read:
Dear Ms. Katherine,
I am William Thakis, a student in your Literature class. Currently I am studying for the Literature exam which comes in two weeks. I've been studying the assigned materials carefully, but I think more reading materials would be helpful. While I would greatly appreciate it if you could suggest some other books for me to read. I understand that you are very busy, but if you could take any moments to give me some extra resources, would really help me prepare for the exam.
Thank you for your time and consideration.
Best regards,
William Thakur
Explanation: