The following text refers to questions 16 to 18.STOP ANTICIPATING TIREDNESSRecently, I was on a flight from San Francisco to Chicago when I overheard one of the silliest conversations imaginable. It demonstrates a critical yet common mistake that many people seem to make on an ongoing basis. Theconversation,_____( I )____, centered around how tired each of these twopeople were going to be - tomorrow and all week!It was as if each person was trying to convince the other; and perhaps themselves, how many hours and how hard they were working, how few hours of sleep they were going to get, and, most of all, how tired they were going to be. I wasn't quite sure if they were bragging or complaining, but one thing was certain, they were appearing more and more tired the longer the conversation continued.They each said things like, "Boy, am I going to be tired tomorrow," “/ don’t know how I’m going to make it through the rest of the week,” and “I’m only going to get three hours of sleep tonight. ” They told stories of late nights, lack of sleep, uncomfortable hotel beds, and early morning meetings. They anticipated feeling exhausted, and I'm sure they were going to be correct in their assumption. Their voices were heavy, as if the lack of sleep they were going to get was already affecting them. I actually felt myself getting tired just listening to part of the conversation!The problem with anticipating tiredness in this way, or in any way, is that it clearly reinforces tiredness. It rivets your attention to the number of hours you are sleeping and how tired you are going to be. Then, when you wake up, you're likely to do it again by reminding yourself how few hours it has been since your head hit the pillow. Who knows what really happens, but seems it to me that anticipating tiredness must send a message to your brain reminding you to feel and act tired because that is the way you have programmed yourself to respond.Don’t sweat the small stuffQuestão n° 16The sentence that properly fills in blank I in the text isa)which must have lasted at least half an hour.b)that could have lasted at least half an hour.c)that should have lasted at least half an hour.d)which should last at least half an hour.e)which can last at least half an hour.
Respostas
No começo do texto, o narrador diz que estava em um avião, ou seja, estamos falando sobre o passado. Desse modo, já podemos excluir as alternativas D e E, que trazem o verbo "to last" (que significa "durar") no presente.
Além disso, a frase que preencheria o espaço vazio é "que deveria ter durado pelo menos meia hora". Então, também excluímos a alternativa B, que utilizar o verbo "could", que significa poderia.
Por fim, temos a diferença entre "must" e "should". Eles são sinônimos e significam "dever", contudo o verbo "should" está mais no sentido de dar conselhos enquanto o verbo "must" está no sentido de obrigar. Logo, nesse caso, como o narrador está afirmando que a conversa realmente durou mais de meia hora, devemos utilizar o "must".
Portanto, a frase correta para completar o texto é: "which must have lasted at least half an hour".
Alternativa correta: A.