hello everydory .It was a question from a university this weekend and a student of mine asked me which one is right and I am in doubt

the university said it was letter A and I don ´t know why . can you help me?

thanks in advance.

of the Tupi and Carioca oil fields __ the coast __

Rio de Janeiro. The oil reserves in these fields __

conservatively estimated __ between 30 billion

and 80 billion barrels, which would put Brazil in

the top 10 countries in the world in reserves.

 

 

18) Which is the correct sequence of the missing

words in the fifth paragraph?

A ⇒ off - of - are - at

B ⇒ in - off - are - on

C ⇒ at - on - is - in

D ⇒ of - off - is � at

 

 

it is A because OFF indicates the great distance from the oil fields to the coast, then OF indicates the neutral link with the city, ARE is because the subject is plural : the fields and finally AT because you may have a precise number behind, for example 45. 9 billion barrels.

 

Hope this could help.