Sentence Correction
Technology must use to feed the forces of change.

must use having fed
must have been using to feed
must be used to feed
must be using to feed
No correction required

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Sentence Correction
In addition to enhanced their reputations through strategic use of philanthropy, companies are sponsoring social initiatives to open new markets.

to having enhance their reputation
No correction required
to have their reputation enhancing
of enhancing their reputation
to enhancing their reputation

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