SORU: cümleler sırasıyla okunduğunda anlam bütünlüğünü bozan cümleyi bulunuz
(I)We don't completely understand why people or animals yawn. (II) It is widely assumed that yawning occurs because we are tired or bored. (III) Another theory is that we yawn because we see someone else doing it. (IV) As a result, when one yawns, his or her alertness is heightened. (V) However, there isn't any hard evidence to support these beliefs.