Dear sir，
I am writing to inquire whether you will have any vacancies for a senior clerk in the near future. i have heard that you hire senior clerk from time to time and i hope you will consider my se favour me with an interview if you think i might be acceptable.
I have been working in the library at shue yan college for two years.I believe that my english is good enough for your needs。 my typing speed is about 75 words. I am enclosing a resume for your reference。
Sincerely yours