Writing help!

<p>Identify the error in these sentences.. please provide explanations. </p>

<p>A recent study of animal language (offers) provocative (theories about) the origins of such complex behaviors (as) the (colorfully and noisy) signals animals use to communicate. </p>

<p>(To stand in) Persepolis in modern Iran and look out, as Darius the First (must have done), at the immense (sweep of fields and mountains) is (to grasp) the vastness of the ancient Persian Empire. </p>

<p>The "Mayan Riviera," which (extends down) the eastern coast of Mexico, (has many hidden) caves, one (of which) is larger (than the size of) Monaco. </p>

<p>Thank you all in advance.</p>

<ol>
<li>Should be “colorful,” not colorfully</li>
<li>No error?</li>
<li>Should be “larger than Monaco” (delete “the size of”)</li>
</ol>

<p>all your answers are correct. </p>

<p>but for the second one shouldn’t it be sweeps?</p>

<p>No, I don’t think so. “Sweep” sounds right to me. In this sentence I would compare the meaning of “sweep” to the word “view.” You are probably looking at the plural “fields” and “mountains”–sweep doesn’t have to be plural. These are all objects of prepositions and don’t need to match in number, if that is what you were thinking.</p>