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Difficulty:
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Question Stats:
75%
(00:43)
correct 25%
(01:03)
wrong
based on 12
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One of the earliest known birds with a beak and contour feathers, Confuciusornis sanctus, with large clawlike "thumbs" on its wings, which probably helped them to climb up to a launching position for flight.
A) with large clawlike "thumbs" on its wings, which probably helped them to
B) with large clawlike "thumbs" on their wings, which probably helped it to
C) had large clawlike "thumbs" on its wings, which probably helped them
D) had large clawlike "thumbs" on its wings, probably to help it
E) had large clawlike "thumbs" on their wings, probably to help it
Archived Topic
Hi there,
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guess for D
this problem is different
One of the earliest known birds with a beak and contour feathers, Confuciusornis sanctus, had large clawlike "thumbs" on its wings, probably to help it to climb up to a launching position for flight.
wouldn't it be better if use their and them instead of its and it????
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