Gramar quesiton

<p>Mediators were standing by, prepared TO INTERVENE IN the labor dispute EVEN THOUGH both sides HAD REFUSED earlier offers FOR assistance. NO ERROR</p>

<p>answer + explanation. thanks.</p>

<p>Offers of assistance not for.</p>

<p>idiom error, not OFFERS FOR, but OFFERS OF.</p>

<p>um, and it is gramMar questION. I assume it’s typing skills to blame?!!!</p>