I apply for a job, purchasing agent, because I learn English for business communication, which is a position that requires negotiation skills to get the best quality products and low prices.
My job procurement officer because I learn to communicate in English. This is a position that requires the skills of negotiation to get quality products and low prices.
I applied for a job staff because I study about business English communication. Which is the position to use negotiation skills to product quality and low price.