How do you say I have nothing in my backpack. using the verb ser

Discussion! you will discuss how work is distributed at home. who does what? how do you clean your home? using commands, progressive tense, and vocabulary learned in this lesson. write this in spanish and english! this is worth 50 percent of my grade so !

Does anyone know what my spanish teacher means by this? i need to use plural forms of the verb ser. and she asked me to use a couple of adjectives to describe the boys collectively and then the girls collectively?

Fill the blank with a la, a los, a las, or al. los alumnos .