Помогите, пожалуйста, выбрать правильный вариант ответа

  • 1. They ... have seen the play last night as they went to a football match instead
    A could
    B must
    C might
    D can't
    2. Carl ... have been here by now. Maybe he got stuck in traffic
    A might
    C should
    B must
    D can't
    3. You ... have been really excited when you heard you'd won the competition!
    A must
    C might
    B should
    D could

  • Первый однозначно can't, второй и третий не однозначны.

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  • Спасибо!

  • 2. Carl ... have been here by now. Maybe he got stuck in traffic

    C should

    3. You ... have been really excited when you heard you'd won the competition!
    A must