Present Perfect vs. Past Simple

Put the verbs into the correct tense (simple past or present perfect simple).
1. He (leave / just) ______________his house.
2. We (build)____________ a tree house last week.
3. Two years ago, Fiona (break) _____________ her leg.
4. I (wash / already) ______________the dishes.
5. The other day, our cat (bring) ___________ home a mouse.
6. We (empty / not) ________________the bin last week.
7. She (be / not)______________ there an hour ago.
8. He (lose / not)________________ any game so far.
9. My brother (pick / not) ___________me up at 8 o'clock.
10. I (make / not) ______________up my mind yet.
11. (you / see) __________________Bob recently?
12. Who (switch) _____________off the lights a minute ago?
13. When (she / become) _____________ a teacher?
14. (you / ride / ever) ______________________an elephant?
15. (you / hurt) __________________your knee when you were playing football?