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by iwill » Sun Aug 24, 2008 9:19 am
For some birds the sense of smell appears to play a role in navigation, since pigeons with surgically removed olfactory nerves were found to have increased difficulties in homing.
(A) were found to have increased difficulties
(B) have been found to have increased difficulty
(C) were found to have increasing difficulty
(D) had been found to have increased difficulties
(E) have been found to have increasing difficulties

Official Answer: B

Please explain.

Thanks,
Iwill
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Source: — Sentence Correction |
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by stubbornp » Tue Aug 26, 2008 12:39 am
It should be in present tense...A,C,D out

B looks better...
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by jeffxujian » Tue Aug 26, 2008 1:28 am
IMO E

because the first sentence used appears, thus the following clause should match with the tense, and that leaves us with only B and E, as I was comparing between B and E, i found B kinda of redundancy: have been found to have increased. On the other hand, E sounds better to me, but i still have some doubts about the form of difficult, should it be singular or plural?
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