Fill in the blank with correct conjugation of verbs: Ser (to be) and Estar (to be), in the present tense.
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Start with the building blocks of knowledge: skills. Take things slow, or conquer concepts at the speed of FactSumo.
Practice is key. Every day you'll practice something new, and apply it to tomorrow. There's no limit to what you can accomplish.
Learn like never before. Combine the elements of sound, picture, video, and text for a unique learning experience.
