Choose the right from of the verb.
1. Look, Tom! You have broken/broke my bicycle.
2.Have you seen/did you see my trainers anywhere? I can't find them.
3.What have you done/did you do with my CD player? It doesn't work.
4.I have started/started taking my English lessons seriously lately.
5.He has joined/joined a sport club recently.
6. She hasn't changed/changed her style yet.