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guerrero
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Scientists cannot help but admit that they are uncertain about the origins of the universe.
(A)cannot help but admit that they were uncertain
(B)cannot admit that they are uncertain
(C)cannot help admitting that they are uncertain
(D)cannot help but to admit that they are uncertain
(E)cannot know but admit that they are uncertain
OA : C
(A)cannot help but admit that they were uncertain
(B)cannot admit that they are uncertain
(C)cannot help admitting that they are uncertain
(D)cannot help but to admit that they are uncertain
(E)cannot know but admit that they are uncertain
OA : C
