Для сестры надо : use the prepositions in, for, on, to, of, at where necessary. 1)she is never late . 2)we don`t have computer-surfing timetable. 3)they do a lot of sums class. 4)i don`t like to sit the desk in teacher. 5)i`m happy we have sport 4 times a week. 6)the browns are leaving . 7)my sister must go bed at 9 o`clock.she is five years old. буду
2) on.
3) in.
4) on, of.
5) in/
6) to, on.
7) to/