<p>Q1:
(Mastery of) cardiopulmonary reuscitation techniques (are) (mandatory for) firefighters and police officers (as well as) rescue squad volunteers.
Answer: B. I understand that the answer is B because there is a subject/ verb agreement; but couldn't A be incorrect too, because you could change (Mastery of) to (Mastering) and the sentence would be grammatically correct no??</p>
<p>Q2:
(In) the United States, the industrial (use of) plastics is greater (than steel), aluminum, and copper combined.
Answer: D. I put no error, but is this sentence wrong because D is not parallel to the other part of the sentence? should " the use of" be added in front of "than steel" to make the sentence parallel??</p>
<p>Q3:
An expedition was sent in 1949 to check (a Turkish villager's reporting) he had seen the remains of Noah's ark on Mount Ararat.
A) a Turkish villiger's reporting
B) the report of a Turkish villager that
The other choices are wrong, but anyways the answer is (B).
but why??? the "check the report" part sounds right, but, "of a Turkish villager that he had seen..." just sounds off! is there a grammatical error here??</p>
<p>The objective of these types of questions is to identify the error. Even if you’re able to change an already correct part of the sentence to something that is more favorable, you would get the question wrong. The only error in this sentence is the is/are error, which you’ve already mentioned.</p>
<p>The correct sentence: In the United States, the industrial use of plastics is greater than the use of steel, aluminum, and copper combined.</p>
<p>Or: In the United States, the industrial use of plastics is greater than THAT of steel, aluminum, and copper combined. </p>
<p>The error in the original is an illogical comparison. The sentence compares the USE of something to metals. You would need to compare the USE of something to the USE of something else.</p>
<p>And for your 3rd question, although that’s a relatively easy one that I would have gotten right, someone else will probably be able to explain a little better than I can.</p>
<p>1) You’re looking to fix the most obvious error in the sentence, not debate whether some part could sound nicer.</p>
<p>2) “than that of steel”</p>
<p>3) To check a Turkish villager’s reporting would be like saying you need to go check up on his “reporting skills” as if he were a news reporter. But this is not the case, and nor is it implied. They’re going to check on his “report” not his “reporting”.</p>