adult
advertisement
background
black
blackboard
board
business
chalk
chalkboard
class
closeup
college student
communication
concept
course
education
fingers
foreign
foreigners
german
german course
german language
germany
hand
immigrant
integration
language
learn
lesson
message
motivation
refugee
school
sign
speak
speech
study
teacher
teaching
text
thinking
training
translation
vintage
vision
word
writing