Sentence Correction
Because of his ill health, the doctor has advised him not to refrain from smoking.

to refrain from
to be refrained from
to resort to
No correction required
to not refrain from

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

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

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