Chalk writing on the blackboard:
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Click on the calculator buttons
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Put the cap on the marker
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Removing the ballpoint pen cap
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Tear off tape
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Electric pencil sharpener
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Remove eraser by hand
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Press a button, write, Ballpoint pen machine
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Pen Writing, Ink Dipping
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Hole puncher
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Tape over carton, Tape holder
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Chalk writing on the blackboard
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Stapler
★★★★★