arm
atmosphere
audience
backpack
bag
boy
caucasian
classmate
classroom
comfort
convenient
curiosity
desk
device
discuss
end
female
girl
glance
goodbye
head
hold
indoor
information
interactive
interest
learn
lesson
light
look
male
material
modern
neighbor
pupil
ready
room
round
say
school
serious
sit
stand
study
teenager
volume
wave
young