Answer:
If your talking about number 3 I would say el saco de dormir.
Explanation:
El saco de dormir means sleeping bag and the senetnce says "I'm going to take __________ so I sleep more comfortable"
un - masculine singular
una -feminine singular
unos - masculine plural
unas - feminine plural
UN lápiz - a pencil
UNAS tareas - some homework
UNOS borradores - some erasers
UNAS mochilas - some backpacks
UNOS libros - some books
UNA calculadora - a calculator
UNOS papeles - some papers
UN examen - a test
Many times we can find the right article by paying attention to the noun ending:
unAS tareAS
unOS librOS
