Вставь: at,on, in, after, before.1) Pets gets up ..... seven

Вставь: at,on, in, after, before.
1) Pets gets up ..... seven o'clock.
2) The play leapfrog ..... classes.
3) .......... Sunday we shall go to zoo
4) There are many subjects ........ the timetable.
5) He never laughs ........ children
6) Our classes are over ........... half past two.
7) They always meet ............ classes in the morninig