<p>NEW QUESTIONS!! These are from the blue book:</p>
<ol>
<li><p>On a hot day, I like to swim or sit in the shade.
–> Why is it not “On a hot day, I like to swim or TO sit in the shade”? I thought there was supposed to be parallelism?</p></li>
<li><p>Air pollution caused by industrial fumes [has been studied] for years, [but] only recently [has] the harmful effects of noise pollution [become] known.
–> The error is “has”. Why?</p></li>
<li><p>The primatologist has argued that sustained observation of a few animals [provides better behavioral data than does intermittent observation of many animals].
–> One of the choices was “[in contrast to intermittent observation of many animals, provides better behavioral data]” but the original one is correct. Why?</p></li>
<li><p>Lions and tigers may be identical in size, but the tiger is the fiercer animal and the lion [the stronger].
–> You don’t need to put “one” to make it [the stronger one]? When do you need to make it clearer for comparison and when can you leave it out?</p></li>
<li><p>The shift from traditional to cosmetic dentistry [is because adults are getting fewer cavities and becoming] more vain.
–> The correct answer is “[is occurring because adults are getting fewer cavities and becoming]”. I know it is the better answer, but out of curiosity, what’s wrong with the original answer?</p></li>
<li><p>In 1972, to reduce pollution in the Great Lakes, [limits were set by the United States and Canada] on the amount of phosphorus that could be discharged into Lakes Erie and Ontario.
–> Is there something wrong here?</p></li>
</ol>
<p>Thanks!</p>