英文關鍵字
beautiful
board
caucasian
child
childhood
children
class
classmates
classroom
concept
desk
education
elementary
exam
exercise
girl
grade
group
hands
happy
indoors
junior
kid
kids
knowledge
learning
lesson
life
little
looking
people
person
preteen
primary
pupil
school
schoolchildren
schoolgirls
schoolkids
smiling
students
success
task
teacher
teens
test
together
writing
young