Which word correctly completes this sentence? ayer leí un en la biblioteca. helado revista libro bibliotecario

Ayer leí un libro en la biblioteca.

Explanation:

Ayer leí un libro en la biblioteca. This means in English: I read a book in the library yesterday. Helado means ice-cream in English, so it lacks sense in the context of the sentence. Bibliotecario means librarian, which also is incoherent since you cannot read a person. Revista is magazine, which would make sense but it's a female noun, and the word "un" indicates that the noun should be masculine. So the only possible option is libro.

don't you think you need to change that on your own what do you think its best music and also which one do you think is the worst kind of music.