Blackboard.
Palabras clave
blackboard,
board,
call,
camera,
chat,
computer,
conference,
course,
desk,
distance,
e-learning,
education,
english,
happy,
earphones,
headset,
hallo,
home,
cyberspace,
lady,
language,
laptop,
learning,
lesson,
online,
positive,
prof,
quarantine,
remote,
school,
sitting
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