Wybierz odpowiednie słowo.

a) Anna: I got up at 5:30 a.m. and it's 8:00 p.m. now. I've been travelling all day.
    Beata: Really? You are supposed to be/ must be exhausted.

b) Anna: The person in the photo has fair hair and Ben has dark hair.
    Beata: Ok. So, it can't/mustn't be Ben.

c) Anna: We're going to Turkey in July.
    Beata: Try not to go out at midday. It can/ has to get really hot at that time of year.