1415
1618
american
answer
attentively
blackboard
boy
boys
classmate
classroom
college
competent
discussion
education
exercise
explanation
focused
geography
girls
history
homework
indoors
japan
japanese
knowledge
learn
lecture
lecture hall
lesson
listen
notebook
pencil
presentation
question
school
serious
smart
student
students
teaching
teen
teenagers
test
university
young