Исправь предложения 1) tiny wrote songs for pop singers last year. 2) billy was in antarctica three days ago. 3)the boy drank cold and dirty water yesterday. 4)jill played football an hour ago. 5)tim and tom were in the desert a week ago.

1) Tiny wrote songs for pop singers last year.
2) Billy was in Antarctica three days ago.
3) The boy drank cold and dirty water yesterday.
4) Jill played football an hour ago.
5) Tim and Tom were in the desert a week ago.
Грамматически они верные. Фактически - надо текст смотреть.