<p>Can someone help me understand the grammatical reasoning behind these two writing questions? (From BB first edition, first test, section 7)</p>
<ol>
<li><p>Conflicts between land developers and conservationists have repeatedly (arose), (causing) Congress to reconsider legislation (that prohibits) building (within habitats) of endangered species. (No error)</p></li>
<li><p>(Surely) one of the most far-reaching changes in the nineteenth century (will be) the change from working (at home) (to working in) the factory. (No error)</p></li>
</ol>
<p>Thanks in advance!</p>
<ol>
<li>Conflicts between land developers and conservationists have repeatedly (arose), (causing) Congress to reconsider legislation (that prohibits) building (within habitats) of endangered species. (No error)</li>
</ol>
<p>Arose is not the pp of “arise.” It should be “have repeatedly arisen.”</p>
<ol>
<li>(Surely) one of the most far-reaching changes in the nineteenth century (will be) the change from working (at home) (to working in) the factory. (No error)</li>
</ol>
<p>“Will be” should be “was” because the nineteenth century is in the past.</p>
<p>@marvin </p>
<p>Do you know where I could find a list of uncommon past participles?</p>
<p>Also, for 21, isn’t the sentence grammatically correct seeing as there is no context? The sentence could be found in a novel set at the beginning of the 19th century, and someone is making a prediction. </p>
<p>Sigh, I guess I have to be more straightforward when answering these grammar questions.</p>
<p>Here’s a list of irregular past participles:</p>
<p>[list</a> of irregular verbs, simple past, and past participles](<a href=“http://www.myenglishteacher.net/irregular_verbs.html]list”>list of irregular verbs, simple past, and past participles)</p>
<p>(I magically found it by Googling “English irregular past participles”!)</p>
<p>As for 21, no, it needs no context. It says in the 19th century, which you can safely be expected to know has long since passed. If you imagine it in a novel or some other exceptional context, that’s your own imagination. K.I.S.S.: Keep It Simple, Stupid!</p>