At long last, the end of the first semester has come, but that just means an even greater challenge: final exams. Things take a strange turn when it appears there is no examiner. Is this a trick to get the C-type students to let their guard down? But a shadowy figure appears with a familiar voice.
Voices are carried via 
vibrations in the atmosphere.
تنتقل حيلك عبر الهواء بالصوت والكلام
Stimmen und Geräusche werden
über die Luft übertragen.
Tus trucos se transmiten
con voz y sonido.
Tus trucos se transmiten
con voz y sonido.
Les sons et la voix
se transmettent dans l’air.
Le voci si propagano grazie
alle vibrazioni dell'aria.
A voz e o som são transmitidos
 através da vibração do ar.