Sentence Correction
They examined both the samples very carefully but failed to detect any difference in them.

any difference between
any difference between
some difference in
some difference between
any difference between

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Sentence Correction
In below compare the bold part of each sentence with expressions A, B, C, D and E. choose the correct expression which is an improvement upon the bold part.They failed in their attempt to repair the demolished portion of that building.

in their attempting to repair
for their attempt to repair
with their attempt to repair
No correction required
in their attempt for repairs

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