Chalk writing on the blackboard: Listen & Download Chalk writing on the blackboard .mp3 Error! Change your browser, please! ⇓ Download Stamp, Plastic seal ⚠ Pressing a button on a ballpoint pen (on a ⚠ Stapler ⚠ Put ballpoint pen on paper ⚠ Pen writing ⚠ Scissors cutting paper ⚠ Manual pencil sharpener ⚠ Throw a ballpoint pen on the table ⚠ Put the cap on the marker ⚠ Put the ballpoint pen on the table ⚠ Ballpoint pen ⚠ Marker writing ⚠ ★★★★★