1. You're expecting David to ring. The phone rings. must
2. Anna is a better runner than Rula. You think Anna will probably win the race tomorrow. should
3. A letter arrives. It s possible that it's from your cousin, Janice. could
4. There's a knock at the door. Your mum says it might be Colin, but you know Colin is on holiday. can’t
5. You see someone wearing a costume. You thrnK there's a strong probability that she's going to a fancy-dress party. must
6. Your sister is looking for her hairbrush. You think it's possible that it's in the living room. might
7. You’re waiting for Harriet to arrive. You think she'll probably be there in half an hour. should
8. You're talking about why James seems to be sad. You think it's possible he's in trouble at school. could
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