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Answer may not be EXACT: A Stem-Changing e>ie verb is a verb like: PENSAR or QUERER. Whenever you conjugate the stem changing E in the verb (usually first E)... you change it to be IE instead of just E. EXCEPT with Nosotros. Example: CERRAR - yo cierro y nosotros CERRAMOS
What is a Stem-Changing e>ie verb? Explain how they work. Use CERRAR (to close) as an example.