<ol>
<li><p>Are psychiatrists unusually vulnerable to mental illness, or are they merely more aware of their problems ** than the rest of us? ** –> Isn’t it supposed to be “than the rest of us ARE”?</p></li>
<li><p> An important factor in the spread of disease is when people fail to practice proper hygiene.
<a href=“C”>b</a> An important factor in the spread of disease is that <a href=“D”>/b</a> Much of the spread of disease results from when</p></li>
</ol>
<p>–> I thought choice b sounded awkward … Why is it not D?</p>
<ol>
<li>In the nineteenth century, photography was a window on the world for curious members of the public, ** few of which ** could ever hope to visit exotic lands in person. A: few of whom</li>
</ol>
<p>–> Is “window on” an idiom? It doesn’t sound right …</p>
<p>1). Are is an implied verb in the sentence.
Example of another case:
I am smarter than he (is). Is is implied and is not included in the actual sentence.
2) Choice D sounds unnecessarily awkward. Choice C coherently replaces the underlined portion.
3)First, if you do not know whether or not a certain underlined portion is an idiom, skim through the rest of the choices, and you should recognize few of which is incorrect since which cannot refer to people. Personally, I do not know whether window on is an idiom but since there is an obvious error elsewhere, pick it.</p>
<p>1) it works either way, with or without the verb.
2) “That people fail to…” acts like a noun. Thus, you say, “an important factor is that people fail to…”. This is the most common way of connecting a noun (“factor”) and a clause (“people fail to…”). For example, you say, “the reason is that [clause],” NOT “the reason is because [clause]” (“because” is redundant).
3) “A window on X” is a means of seeing X, something that allows you to see X. “Photography was a window on the world” because photography allowed people who couldn’t travel to see the world (through pictures). You can also refer to it as a “window TO the world,” which might make more sense to you. Other variants include “window onto” and “window into.”</p>
<p>You can think of “a window on” as an idiom, but it can be explained grammatically. “On” can mean “in the direction of something”: “he looked out on the world”; “I set sight on the world”; “my mind is on something.”</p>
<p>Where do these questions come from? The last one seems pretty unlikely to appear in similar form on the test.</p>