Can you help me to answer this these questions

What does it mean to conjugate a verb? how do you conjugate verbs in spanish?

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

Which of the following would fit these sentences? 1. es importante comer de grupos de comidas cada dia 2. estoy (with you); los guisantes son saludables 3. en una ensalada tomates no hay muchas grasas word bank: 1. la salud, 2. bien, 3. lechuga, 4. comida, 5. que si, 6. todas, 7. prefieres, 8. de acuerdo