Вставьте нужный предлог и объясните свой выбор 5. my brother is interested stamps. a)at b)in c)on 6. alice is found ballet. a)of b)by c)at 7. theu play begins 5.30. a)at b)of c)on 8. put a ball a box. a)by b)into c)with 9. my friend lives petrovka street. a)by b)of c)in