What is you guys are in Spanish with the verb Ser?

My spanish teacher said this to me.. look at the ending on your verb. you need to make it agree with "yo" this is my sentence- sí yo estudiar español en la escuela how do i make it agree with "yo"

These are the questions and answers select the best translation for the following term or phrase. what did i do? ¿qué hice? select the best translation for the following term or phrase. i take one piece of wood. tomo un trozo de madera. fill in the blank according to the story. en la mesa hay varios trozos de madera

Choose the best phrase to complete the following sentence. (she knows) que necesito mas ropa. a) ella conoces b) ella saben c) ella conoce d) ella sabe (we ask for) ropa nueva. a) piden b) preguntan c) preguntamos d) pedimos