1) Last week I visited my grandparents(Подсказка Last,Past Simple)
2)My sister often reads books in the evening(Подсказка often,Present Simple)
3)She will go to the south next summer?(Подсказка next summer,Future Simple)
4)Tim don't swims in the river every day(Подсказка every day,Present Simple)
5)He didn't watch TV yesterday(Подсказка yesterday,Past Simple)
6)Tim will swim in the river tomorrow(Подсказка tomorrow,Future Simple)