【答案解析】Dear Miss Wang,
I am writing to thank you for
[1]
your great help in my preparation for the job interview. Thanks to your kind help, I got this job.
Before the job interview, you have given me some good advice that is quite beneficial.
[2]
To begin with, you told me to dress properly so as to leave a good first impression on the interviewer. What"s more, you advised me to make sufficient preparation for the possible questions in the interview so that I could speak clearly and fluently as well. Last but not least, you emphasized that self-confidence was of vital importance, which could help me bring my capacity into full play.
[3]
Thanks a lot for your kindness and your patience.
[4]
I wish you all the best in your future life and work.
Yours sincerely,
Li Ming
[解析] [1] 感谢信开头的常用表达，还可以用I am writing to express my sincere thanks for...表达。
[2] 第一句Before the...is quite beneficial是第二段的主题句，之后分三个方面讲述了老师对自己的帮助。本段中运用To begin with, What"s more和Last but not least来衔接这三个层面，使本段内容层次清晰、易懂。
[3] which could... into full play是分限制性定语从句，补充说明前一句的内容。bring sth. into play意为“使某事物发生作用”。
[4] 客气用语，表达对对方的感谢。