absent
La mitad de los estudiantes están ausentes.
Half of the students are absent.
Tom y Mary me dijeron que iban a estar ausentes.
Tom and Mary told me they were going to be absent.
Three people are missing.
La mitad de los estudiantes estaban ausentes.
Half of the students were absent.
Si todavía hay ausentes, por favor envíeme sus nombres.
If there are still some absentees, please send me their names.
Hoy muchos estudiantes están ausentes.
Many students are absent today.