<p>Mediators were standing by, prepared to intervene in<a href="A">/U</a> the labor dispute even though<a href="B">/U</a> both sides had refused<a href="C">/U</a> earlier offers for<a href="D">/U</a> assitance.</p>
<p>The answer is (D) but can anyone tell me why it's incorrect?</p>
<p>“…offers of,” not “…offers for.”</p>
<p>thanks for the quick reply Sikorsky. But is it always “offers of”?</p>
<p>Yah, they are idiomatic expressions I think. There will be ~1 question like that on the SAT. </p>
<p>I.E on the sat this weekend, the last question of find the error started with “Interest to revive the Olympic games…” Many people put the answer choice “no error”. However it should be interest IN reviving. Identifying these errors comes with practice, just keep answering questions and see what you are doing wrong. </p>
<p>(I also see the error “should of” and “could of” quite often, it should be “should have” and “could have” [sounds like would’ve etc.])</p>