Answer :
Final answer:
In Spanish, 'some books' is translated as 'unos libros' and 'a pencil' as 'un lápiz'. Indefinite articles are used properly.
Explanation:
1. some books: unos libros
2. a pencil: un lápiz
3. a calendar: un calendario
4. some erasers: unas gomas
5. some papers: unos papeles
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