Back view of group of students raising their arms during a class at lecture hall.
Palabras clave
adult,
african american,
answering,
asking,
back to school,
campus,
class,
classroom,
college students,
education,
epidemic,
female,
indoor,
intelligence,
cognition,
crowd,
learning,
lecture hall,
avocation,
lifestyle,
male,
man,
pandemic,
people,
pointing,
prof,
backview,
student,
studying,
teacher,
university,
college students,
woman
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