man, why would you try to learn English in duolingo... English is taught in school in bd, right?
LOL i missed the duolingo part completely. My mistake. And yeah english is taught in BD schools but the standard is very poor in bengali medium. English taught in english medium schools with UK cambridge/edexcel curriculum is of decent level and student actually learn english since all the subjects are in english apart from a single bengali language subject. Though it varies from school to school. Some schools r really good but some are of super poor quality.