•Why. are you interested in working with this company ?
•Why do you have (or take, feel) interest in applying our firm?
•Why are you desirous to get this job (post, position)?
C:
• I‘m interested in working with your company because I know yours is one of the largest computer companies in our country (province, city). My major in the university was computer programming, so I wish to have,the opportunity to apply my knowledge here.
•Your firm has a good reputation in the advertising business. Anyone who works at your firm can set his heart at ease about his own future. That is why I have interest in applying to your firm.
•My past work experience is closely related to this job. I am confident of doing the job well. Therefore I am desirous to get this job (post, position).