‘셀타’는 무엇을 다루나?[What does CELTA cover?]<2> The CELTA qualification is the most popular EFL qualification in the world. This is due to the excellent reputation it has built up over the years, as well as the fact that it is a wide ranging course with a range of assessment methods.[‘셀타’ 자격증은 세계에서 가장 인기가 있는 자격증..