background
bilingual
billboard
black
blackboard
board
bye
chalk
chalkboard
characters
chinese
class
concept
dirty
education
end
english
erased
farewell
goodbye
grunge
hand
handwriting
holding
knowledge
language
learn
learning
lesson
letters
meet
message
old
pattern
school
sign
smudged
solong
teaching
text
texture
translation
used
white
wood
word
write
writing