A、A letter of invitation. B、A letter of recommendation. C、A letter of introduction. D、A letter of application. B

Dear Patrick,
    I wonder if you could help me. A colleague of mine, Brigitte O. Brian, is moving to Dublin and looking for a job.
    This is her background: she left school in 1990 and trained as a clerk at ABC Pharmaceuticals. She finished her training in 1992 and worked at this company for 4 years. In 1998 she joined our company as a senior clerk. After 2 years she became assistant manager of the export department. In the evening she took computing and language courses. She now speaks fluent English and some Spanish. Her husband is from Dublin and she lived there for a year in 1997. She is a very good worker and I can recommend her.
    If you need any further information, I can ask her to send a complete curriculum vitae. Thank you for your help.
    Best wishes.
                                                                        Alain
Questions 15 to 17 are based on the passage you have just heard.
15. What kind of letter have you heard?
16. In which year did Brigitte become assistant manager?
17. Which of the following is TRUE?