present perfect or past simple:
1)two days ago my father (repair) the car.
2) last year my father (work) at hospital.
3) yesterday I (go) to school.
4) last week I ( play) tennis
5)yesterday my sister also(go) to school/
6) last month she (dance) in the club.
7) two days ago my mother (prepare) tasty dishes.
8)yesterday I (help) my mother 
9) my friends (swim) in the river last summer
10) yesterday my grandparents (watch) TV.