英文關鍵字
book
boy
boyhood
busy
candid
caucasian
cheerful
child
childhood
concentration
education
elementary
exam
fun
home
homework
human
interior
lad
learn
learning
little
one
paper
pencil
people
person
portrait
reading
room
school
schoolboy
sitting
student
study
studying
teenager
teenagers
textbook
think
writing
years
young
youth