1 dropped out - Past Simple
2 handed in - Past Simple
3 won - Past Simple
4 apply for - инфинитив или Present Simple
5 completed - Past Simple
6 studying - Participle I - причастие I - время определить нельзя
7 graduated - Past Simple
8 do - инфинитив или Present Simple
9 attend - инфинитив или Present Simple
10 enrolled - Past Simple