Answer:
Yo: Cuesto
Tu: Cuestes
El: Cueste
Nosotros: Costamos
Ellos: Cuesten
Explanation:
The only one I don't remember is the Vosotros form. Also, it just wants you to conjugate it with a pronoun (I, He, You...etc) You can trust me because I know Spanish (I'm Puerto Rican) and I am in Spanish 3 class.
