<p>Hello fellow CC'ers! This may sound like a dumb question, but why is it that the answer is C and not A? My reasoning is that the verb phrasing with began sounded weird. Does C have something to do with verb tense or idiomatic phrasing?</p>
<p>It was not until 1982, the year two major supermarket chains began replacing paper bags with plastic ones, when the use of plastic shopping bags became widespread. </p>
<p>A) began
B) with
C) when
D) became
E) No error</p>
<p>With “when” it looks like a run on. Began is perfectly used due to past tense needed due to the fact that it is talking about past events.</p>
<p>Sent from my SCH-I535 using CC</p>
<p>It should be “that the use,” not “when”.</p>
<p>“Not until 1982 when the use” doesn’t make sense</p>
<p>@imperio @Thephysicist Ah! I see it now. Thanks so much! :)</p>
<p>Ok I have two other grammar questions. </p>
<ol>
<li>Until relatively recently humans were thought to be uniquely self-aware, (scientists now know) that most chimpanzees and orangutans can recognize their own reflections.
a: scientists now know
b: but scientists now know
c: but scientists who now know
d: however, scientists now know
e: but with scientists now knowing</li>
</ol>
<p>I know that there is an error and I narrowed it down to B and D. I chose D out of a whim but the correct answer is B. Can anyone help explain this for me? Thanks!</p>
<ol>
<li>Because Earth’s gravity is greater than the Moon’s, the energy expended in traveling from Earth to the Moon is greater than (the opposite) direction.
a: the opposite
b: traveling in the opposite
c: if one travels in the opposite
d: that of traveling in the opposite
e: that expended in traveling in the opposite</li>
</ol>
<p>I chose D for this because it is simpler than E, but somehow Collegeboard says that E is the correct answer. Can someone help explain this also? </p>
<p>You guys rock! Thanks a bunch!</p>
<p>1.D is incorrect because ‘, however,’ is only used in a clause
for example: making friends is hard. you can, however, make friends with yourself.
in this case, there are 2 independent clauses. ;however, should be used.</p>
<p>2.D is faulty comparison, that of traveling opposite means, energy of traveling opposite, not energy that are expended for traveling opposite. this sentence is not comparing energy but rather is comparing the amount of energy that are wasted.
for example: the books i read are greater than those of my teacher. see? there is a faulty comparsion, it should corrected to the books i read are greater than those my teachers read.
in another way, verb+noun should be compared with verb+noun
for this type of problem, watch out for like, than, as , unlike.</p>
<p>wow that was really insightful! Thanks!</p>