Right now I am in an EE Summer Co-Op with a nice company. They hired me knowing that it was only for my summer break. However, I would like to come back for my 1 month winter break or even next summer's break. How would I go about asking my supervisor for an extension. Although I like the company I am working with which is in Power field of EE I would eventually like to try out some of the other fields, specifically the semi-conductor area. How would it look if I asked for the extension, was granted it, but then decided that I was going to take on another Co-Op with a different company?