<p>I cleaned the house by the time my parents come home from their vacation in Mexico. No error</p>
<p>Participants in the club have devoted themselves to informing the public, through speeches and literature, about the ways in which physically challenged people have contributed to the success of industry No error</p>
<p>Many of those involved were professionals who, in recognition of their accomplishments in previous projects, had been given new assignments. No error</p>
<p>Though it began as a protest on traditional theology, the Protestant reformation created a new set of traditions in its own era. No error</p>
<p>Unlike 100 years ago, school teachers nowadays usually aspire to earn a good living.
A. Unlike 100 years ago, school teachers nowadays
B. Unlike 100 years ago, in contemporary society, school teachers
C. Unlike their counterparts 100 yeras ago, school teachers today
D. Differing to their counterparts 100 years ago, today's school teachers
E. School teachers today, opposed to 100 years ago</p>
<ol>
<li>cleaned</li>
<li>have devoted...no idea why</li>
<li>had been given...again a random guess</li>
<li>a protest on</li>
<li>C...idk I guess it sounds better</li>
</ol>
<ol>
<li>have devoted is wrong I think. I dont think you can have 2 have somethings in the same sentence. </li>
<li>had been given should be were</li>
<li>I think created should be had created. </li>
<li>I like C</li>
</ol>
<ol>
<li>"cleaned" Tense error "Will have cleaned"
2.No error?</li>
<li>No error? </li>
<li>Protest on??? Doesn't sound right to me.</li>
<li>I like C Others are faulty comparisons.</li>
</ol>
<p>3 is either no error or having tense errors.</p>
<p>If we take the "in recognition" part out, it will be easier to analyze the sentence.
"Many of those involved were professionals who had been given new assignments." to me sounds fine.</p>
<p>1) A - will clean
2) C - to inform
3) D - have been given
4) B - a protest against
5) C - Others are misplaced modifiers or they just don't seem right...</p>
<ol>
<li>A - will have cleaned</li>
<li>E - I see no error.</li>
<li>E - Again, I can spot no error.</li>
<li>B - a protest against</li>
<li>I am confused between A and C. Both seem correct to me.</li>
</ol>
<p>Many of those involved were professionals who, in recognition of their accomplishments in previous projects, had been given new assignments. No error</p>
<p>It depends on the tense and the order. So in this sentence, these pros got new assignments because they did good on previous projects. So the
'in rcognition' part has to be in a tense before the outside. I dunno I just think were sounds better but had been isn't bad. The answer would be nice.</p>