answer
ballpen
biro
blue
box
certification
check
checking
checklist
checkmark
checkout
checkup
choice
close up
control
correct
decision
election
exam
examination
knowledge
macro
mark
marking
metal
monitoring
option
pen
poll
proof
put
put tick
question
right
rolling writer
selection
silver
square
square box
survey
symbol
test
tick
verification
verifying
vote
voting
work checkup
written
yes