1. Thank you again for your assistance.
2. I'm truly grateful for your support.
3. I appreciate your time and attention.
4. Your help has made a big difference.
5. I'm fortunate to have your guidance.
6. I can't thank you enough for your generosity.
7. I'm indebted to you for your kindness.
8. Your help is greatly appreciated.
9. I'm so grateful for your understanding.
10. Thank you for going above and beyond.
11. Your assistance has been invaluable.
12. I'm thankful for your patience and cooperation.
13. I'm sincerely grateful for all that you've done.
14. Your support means a lot to me.
15. I couldn't have done it without you - thank you!
英文信件结尾
16. Words cannot express how thankful I am for your help.
17. I'm deeply appreciative of your support.
18. Thank you for your unwavering support and encouragement.
19. Your contribution is truly appreciated.
20. I'm forever grateful for your assistance.