英文關鍵字
abandoned
african
american
answer
asian
background
black
board
boy
budget
business
caucasian
chair
chalkboard
child
class
classroom
communication
conference
desk
discussion
diversity
eager
education
elementary
enthusiastic
female
girl
hand
kid
learn
lecture
male
mixed
multiethnic
people
primary
pupils
question
race
school
students
study
studying
teacher