O texto permite afirmar que 
Sem alterar o sentido do texto, é possível substituir big gap por 
E-mail spoofing is frequently used by 
According to the text, in order to avoid spoofing, one should 
An example of sensitive data mentioned in the last paragraph is 
About the vocabulary the author uses in his text, decide whether the statements below are right (C) or wrong (E).
umpteen (l.39) could be correctly replaced by torn.
A palavra que preenche corretamente a lacuna I é 
Based on the text, judge the items below.
In line 3, “immediately” means soon after leaving.
The author of the text: 
In “[…] or whether power will be devolved to minority groups” (l. 53-54) “to devolve” means: 