/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: melowilshere https://cdn.slidesharecdn.com/profile-photo-melowilshere-48x48.jpg?cb=1523440353 Dear teacher , If my hand was not raised it means I don`t know the answer. Sincerely picking me up is a sign of foolishness.