The rewriting of the paragraph, using the corresponding capital letters and punctuation marks is:
Ayer recibí la invitación de boda de Marta, mi amiga colombiana. Inmediatamente empecé a pensar en un posible regalo. Fui al almacén donde Marta y su novio tenían una lista de regalos; había de todo: copas, cafeteras, tostadoras. Finalmente decidí regalarles un perro. Ya sé que es un regalo extraño, pero espero que les guste a los dos.
Punctuation marks and capital letters.
The punctuation marks, according to each of those used, have a functionality that is explained below:
In the case of capital letters, it should be remembered that all proper names, paragraph starts and first words after a period require that the first letter be capitalized, hence they have been used and underlined in the answer.
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