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30 Jan 2019, 17:01
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Difficulty:
15%
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Question Stats:
78% (00:54) correct
22%
(00:56)
wrong
based on 143
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Ornithologists find it difficult to study the Amazonian Biffa, a species native to the Amazon watershed, mainly on account of its feeding and nesting at great heights—often 200 to 300 feet above the forest floor.
A. on account of its feeding and nesting
B. on account of their feeding and nesting
C. because it feeds and nests
D. because they feed and nest
E. because of their feeding and nesting
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31 Jan 2019, 02:43
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A. on account of its feeding and nesting "on account if its" is unidiomatic
B. on account of their feeding and nesting THEIR is plural. Should be singular since it refers to the Amazonian Biffa. Moreover, if THEIR is used, it refers to "Ornithologists" which is plural.
C. because it feeds and nests Correct
D. because they feed and nest THEY is used here. Same issue as B
E. because of their feeding and nesting Same issue as B
B. on account of their feeding and nesting THEIR is plural. Should be singular since it refers to the Amazonian Biffa. Moreover, if THEIR is used, it refers to "Ornithologists" which is plural.
C. because it feeds and nests Correct
D. because they feed and nest THEY is used here. Same issue as B
E. because of their feeding and nesting Same issue as B
