Посогите с заполни пропуски предлогами in on at under i am __ the classroom. i am not __ the blackboard. i am __ the desk. there is a book __ my desk. my pens and pencils are __ my pencil-box. the pencil-box is __ my bag. the bag is __ the desk. we’ve got flowers __ our school park. two pupils are sitting __ the tree __ this park now