/ http://www.slideshare.net/images/logo.gif / 狠狠撸Share feed for 狠狠撸shows by User: kanokwanthaipradit https://cdn.slidesharecdn.com/profile-photo-kanokwanthaipradit-48x48.jpg?cb=1523570367 This Facebook is used for communication between only my students (SDU.) and me. Then I'm sorry. I can't add other people to join this facebook but I have another one. You can join it, so you can leave message for me. I will add you next time