選択的
academic
book
boy
casual
caucasian
child
childhood
children
class
classmate
classroom
concentration
cute
desk
education
educational
elementary
female
five
focus
girl
holding
journal
kid
knowledge
leaning
learning
little
looking
male
pencil
people
person
primary
pupil
room
school
schoolboy
schoolchildren
schoolgirl
sitting
student
study
studying
work
writing
young