


In this text, the author



In this text, the author
Mark the only option in which the word(s) in bold type expresses an idea of obligation/necessity:






In this text, the author:



In "… one of our key activities is making sure that …" (lines 10-11) "key activities" means the same as:






In the sentence "Even though their status often differs from one country to the next, airports have a common aim..." (lines 45-46), "even though" can be correctly substituted by:



According to the text, EUROCONTROL is responsible for all the actions below, EXCEPT:



The only sentence that contains an adjective used in the superlative form is:



The paragraphs that contain examples of EUROCONTROL's plans for the future are:
INSTRUÇÃO: PARA RESPONDER ÀS QUESTÕES DE 11 A 15 , TOME COMO BASE O TEXTO ABAIXO.

The word "which" in "Transgressing the historical fact which took place _____ the end of the last century" refers to