<ol>
<li>Five years in (the writing,) her new book is (both a response) to her critics' mistrust (with) her earliest findings and (an elaboration) of her original thesis.</li>
</ol>
<p>Correct: C
I put no error.</p>
<ol>
<li>(Despite) its cultural importance, the Daily Gazette (lost) 70 percent of its subscribers sine 1920 and, by 1955, (was losing) (as much as) $200,000 a year.</li>
</ol>
<p>Correct: B
I put no error.
In hindsight, I can see why it should by "had lost," but my reasoning mostly revolves around it sounding right...could somebody please provide a grammatical explanation as to why "lost" is incorrect.</p>