2535
5560
adult
american
busy
classroom
coach
concentration
conference
course
desk
discussion
education
emotions
ethnicity
european
exam
female
group
happy
indoors
interaction
interest
learn
male
mature
men
modern
multinational
occupation
people
planning
portrait
positive
presentation
professional
projects
student
study
table
talk
teaching
teamwork
together
training
women
working
workplace
young