Try Flo-Joe's latest CPE Writing task
Should give details of the training course and the request to attend the course, as well as the reasons why you should attend.
Should be formal and polite throughout, even though the letter may contain strongly persuasive arguments. The senior manager would give due consideration to the request to attend the training course.
The letter should conform to an appropriate letter format. Should state early on the reason for writing the letter. Should also use clear organisation through appropriate paragraphing.
Language of description and persuasion (e.g. "This course will enable me to remain at the cutting edge of developments in my field"). Does not have to be completely accurate but any errors should be minimal.