1) She was ten minutes late to school => She was late for school for ten minutes.
2) Last summer i have stayed on my uncle's farm for two weeks
=> Last summer, I stayed on my uncle's farm two weeks ago.
3) The police found bomb-making equipments in his flat
=> Bomb-making equipments are found by the police in his flat.
4) Every body is doing his best => His best are being done.
5) This novel,that i bought last week, is very interesting
=> This novel which I bought last week is very interesting.
6) She has hardly never made such a mistake=> She seldom makes such a mistake.
7) He had nothing to do and nobody to play => He doesn't have something to do and he is lonely.
8) The boy wasn't old to stay at home alone
=> The boy is too young to stay at home alone.