Who says this? Write Mary, Mary's mum or Hugo Pie.

Решение:

Определяем, кто из персонажей произносит каждую реплику, исходя из контекста диалога.

1. : Can I have two kilos of potatoes, please? Mary
2. : Where are the fruit and vegetables? This bag is empty! Mary's mum
3. : You dropped these fruit and vegetables in the street, I think. Mary's mum
4. : Thank you! Now I don't have to go shopping again! Hugo Pie

Ответ: 1. Mary 2. Mary's mum 3. Mary's mum 4. Hugo Pie.