1112
1213
1415
1516
1718
american
book
boy
busy
caucasian
classmate
concentrated
coronavirus
covid19
doing
epidemic
european
female
french
german
girl
group
group of people
indoor
intellectual
intelligence
interesting
kid
learning
lesson
library
mask
pandemic
person
preparation
russian
schoolboy
session
smart
solving
studying
task
teenage boys
teenager
thinking
together
virus