Final answer:
To complete the sentence, Javier needs to choose the word 'devolver' to say that he needs to return the books to the library or else he has to pay seven dollars.
Step-by-step explanation:
Javier is having a day full of problems. To complete his sentences, he needs to choose the appropriate words from the provided list. For example, if he needs to write 'I need to return the books to the library today,' he would choose the word 'devolver.'
So, to complete the sentence '¡Qué dia! Necesito symbols los libros a la biblioteca hoy o tengo que pagar siete dólares,' Javier should choose the word 'devolver' to say 'I need to return the books to the library today,' or he would have to pay seven dollars.
In this case, the sentence suggests that Javier needs to return the books to the library or else he has to pay seven dollars.
Learn more about Completing sentences in Spanish