The correct words to complete the sentence are 'Me pongo los calcetines'. The verb forms exercise includes examples in different tenses.
Me pongo los calcetines en los pies antes de ponerme los zapatos.
In the singular, you would say, 'I put all of my clothes in a box I found in the basement.' In the plural, it would be, 'I put all of my clothes in some boxes I found in the basement.'
Verb Forms Exercise:
https://brainly.com/question/29425915