Помогите пожалуйста!!! Use the prepositions In, for, on, to, of, at where necessary. 1) She is never late _____ school/ 2) We

Помогите пожалуйста!!! Use the prepositions In, for, on, to, of, at where necessary. 1) She is never late _____ school/ 2) Wedon't have Computer-surfing _____ our timetable. 3) They do a lot of sums _____ class. 4) I don't like to sit ____ the desk in front _____ the teather. 5) I'm happy we have Sport 4 times _____a week. 6) The Browns are leaving Moscow _____ Paris _____ Monday. 7) My sister must go _____ bed at 9 o'clock. She is five years old/ Заранее спасибо!!!