Here's a tip:
In most cases, the best place for a one-word adverb is directly before the main verb of the phrase. In this case, your main verb is 'help', so the most natural word order is "..will definitely help".
12 november 2017
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The second option is more commonly used by native speakers, but the first is not wrong either.
12 november 2017
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Heb je je antwoorden nog steeds niet gevonden?
Schrijf je vragen op en laat de moedertaalsprekers je helpen!