英文關鍵字
abstract
accept
agree
allow
answer
approve
background
bad
black
blackboard
chalk
chalkboard
check
choice
choose
choosing
circling
confirm
correct
decide
decision
draw
drawing
eduction
false
good
icon
mark
positive
presentation
reject
right
school
select
selection
sign
student
study
symbol
teacher
test
true
write
wrong
yes