21)My friend finished school last year.
22)Grandfather did not work in the garden.
23)get-got, think-thought ,write-wrote, be-was/were, dance-danced,work-worked
24)Pupils did not write a report in Literature on Monday.
25)Kate and Mike did not decorate the classroom three hours ago.
1) my
2)their
3)more interesting
4)the biggest
5)the oldest
6)best