<p>These are the questions on the writing question of the PSAT Form W which I need explanations for.</p>
<ol>
<li>[When] L'Enfant suggested [to build] the United States Capitol [at the center of] Washington, D. C., he also [offered] to design a landscaped mall nearby.</li>
</ol>
<p>Could anyone please give me a grammatical explanation of why "to build" should be "building"?</p>
<ol>
<li>Fran [would be happy] to assist Brad, he he [simply] requested help [early enough to give] her time [to complete] her own assignments.</li>
</ol>
<p>Should "would be happy" be "would of been happy"? Can someone also give me a grammatical explanation of why this is the case?</p>
<ol>
<li>Scientists [have recently discovered] that not all genes adhere to predictable Mendelian patterns of inheritance; [it has] forced them [to reexamine] some [formerly unassailable] assumptions.</li>
</ol>
<p>Because "it has" is ambiguous, should it be "this has" instead?</p>
<ol>
<li>Jonathan Swift's "Gulliver's Travels" [being comprised of] four sections, each of which [depicts] the title character beginning a new voyage as if [he had learned] nothing [from his previous experiences].</li>
</ol>
<p>Should "being comprised of" be "comprises of"?</p>
<ol>
<li>If residents [were to separate recyclable materials apart from the daily trash], the cost of refuse disposal would be greatly reduced.</li>
</ol>
<p>a) default
b) separate recyclable materials from the daily trash
c) were to separate recyclable materials from the daily trash
d) separate recyclable materials and the daily trash
e) will separate recyclable materials apart from the daily trash</p>
<p>Completely lost on this one. Could someone please give me a grammatical explanation to why the correct answer is C, and why the other answers are wrong?</p>
<ol>
<li>The attorney argued that "sampling" [or by otherwise adapting] her client's music for commercial purposes was a violation of copyright law.</li>
</ol>
<p>a) default
b) or if otherwise adapted
c) or to otherwise adapt
d) or otherwise adapted
e) or otherwise adapting</p>
<p>Could anyone give me a grammatical explanation of why the answer is E instead of A?</p>
<ol>
<li>Excessive exposure to the sun's ultraviolet rays [are shown to have] many unhealthy consequences, such as premature aging.</li>
</ol>
<p>a) default
b) show that they have
c) has been shown that it has
d) has been shown to have
e) have been shown as having</p>
<p>Could anyone give me a grammatical explanation of why the answer is D instead of C?</p>
<p>Thanks,</p>