a school operating on a system in which study materials and tests are mailed to the students, who in turn mail their work back to the school for grading.
[ 1885-90 ]
a school operating on a system in which study materials and tests are mailed to the students, who in turn mail their work back to the school for grading.
[ 1885-90 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012