25s
activity
adult
american
attention
audience
auditorium
classroom
communication
concentration
course
educating
education
emotions
european
exam
faculty
female
german
group
indoors
information
institute
intelligence
interaction
interest
interior
knowledge
lecture
lecturing
lesson
listening
noting
participants
people
portrait
positive
sitting
student
students
studying
summary
table
together
training
tutorial
university
woman
young