The bones are believed to be...

[Debjit]

Test No. incompl/advan-79 "GMAT Verbal Quiz (2)", question 6

It's not yet been fully certified yet but the recently discovered bones are ......... to be those of the missing link.

(a) credited
(b) argued
(c) required
(d) believed

Test No. incompl/advan-79 "GMAT Verbal Quiz (2)", answer 6

It's not yet been fully certified yet but the recently discovered bones are believed to be those of the missing link.

Correct answer: (d) believed

Your answer was: incorrect
It's not yet been fully certified yet but the recently discovered bones are argued to be those of the missing link.
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Dear Sir
When the statement says that "it has not been fully certified yet", that means it may or may not be certified. So, the argument is still on. So "argued" would be the correct word.
Thank you

[Torsten]

As you can see the correct word here is believed because people believe that the discovered bones are those of the missing link. The bones are believed to be is a passive construction.
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Test Of English for International Communication
TOEIC Preparation & TOEIC Vocabulary

[rich7]

The bones are believed to beis a passive construction.

Just to make it clear: to be is a.............
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I should have been born in the USA.
I've got this thing about America.

[Aiskilus]

Hi guys,

It's not yet been fully certified yet but the recently discovered bones are ......... to be those of the missing link.
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I believe that in this sentence we should use the word 'yet' only once.?... it's either 'It's not yet been fully certified...' or 'It's not been fully certified yet...'

[Conchita]