AIM GMAT wrote:A huge flying reptile that died out with the dinosaurs some 65 million years ago, the Quetzalcoatlus had a wingspan of 36 feet, believed to be the largest flying creature the world has ever seen.
(A) believed to be
(B) and that is believed to be
(C) and it is believed to have been
(D) which was, it is believed,
(E) which is believed to be
The
present infinitive expresses CONTEMPORANEOUS action (an action happening at the same time as another action):
I am happy to be president.
In the sentence above, I
am happy (in the present)
to be president (also in the present).
The
present perfect infinitive expresses PRIOR action:
I am happy to have been president.
In the sentence above, I
am happy (in the present)
to have been president (in the past).
In the SC above, the reptile no longer exists, so the present perfect infinitive is needed:
...the Quetzalcoatlus...is believed to have been the largest flying creature the world has ever seen.
The correct answer is
C.
Last edited by
GMATGuruNY on Thu Feb 23, 2012 4:19 am, edited 1 time in total.
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