the trash/ must/pick/students/ before leaving/ up Seleccione una: a. Students pick the trash up before leaving must. b. Students pick up the trash must before leaving. c. Students must pick up the trash before leaving.
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Respuesta:
C- Students must pick up the trash before leaving.
Explicación:
Must es un verbo auxiliar que se utiliza acompañado de un verbo en infinitivo para expresar obligación.