英文關鍵字
advertisement
advertising
alphabet
announcement
background
black
blackboard
board
chalk
chalkboard
class
classroom
communicating
communication
concept
grateful
greet
greeting
greetings
hand
hands
handwriting
holding
invitation
invite
inviting
isolated
letter
letters
message
note
notes
notice
posts
sign
spelling
text
thankful
welcome
welcoming
white
word
words
write
writing
written