1. Thank you for everything. /Thank you very much indeed.

2. I appreciate it /your help very much. 来源：考试大

3. I don't know how to thank you enough.

4. It's kind of you to say that.来源：考试大

5. You've been a great help /very helpful.

6. Thanks a million, Mr. Lee, for what you have done for me.

7. I hope I can repay you for it.

8. You've been very thoughtful.来源：考试大

9. I appreciate your consideration.

10. Thank you very much, but I guess I'd better do it myself.

11. Thank you /Thanks for trying (your best).

12. Thank you anyway /all the same /for asking.来源：考试大

13. I'm most /very /extremely /tremendously /awfully /terribly grateful to you for taking so much trouble to explain the best way of getting there.

潇洒回答：

Sure. /You're most welcome. /Don't mention it. /It was nothing. /It was my pleasure. /Think nothing of it. /That's all right. /any time. /Don't worry about it . /Forget it. /You bet.