6 Choose the correct words.
1 I can't find my mp3 player. My brother could / can't have borrowed it.
2 Everyone is leaving the stadium. The match must / can't have finished.
3 This film was released earlier this year. You might / can't have seen it last year.
4 I saw Uncle Rob smoking again. He must / can't have given up yet.
5 My phone rang. The caller was 'Home' It might / can't have been my mum.
6 Ethan's broken his leg. He must/
can't have fallen over again.​