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Sentence corrections practice with answers and explanations for GRE, GMAT and SAT. ( Part -2)

Part 2

1.      Having logged thousands of hours watching primates from chimpanzees to macaques, chimps and other primates are no longer thought to be natural-born killers by Dr. Swenson, they are attuned to peacemaking.
A.Dr. Swenson has come to believe that far from being natural-born killers, chimps and other primates
B.Dr. Swenson has now the belief that far from being natural-born killers, chimps
and other primates
C. chimps and other primates are not longer thought to be natural-born killers by Dr. Swenson, they
D. chimps and other primates are no more thought to be natural-born killers by Dr.
Swenson, they
The best answer is A. The noun that comes directly after the comma is modified by having logged thousands of hours watching primates from chimpanzees to macaques. Answers B, D, and E illogically have the chimps observing other primates.


2.      The strand fills with water during the rainy season that the peat then holds and keep it humid, all of which creates conditions enabling trees to grow.
A. enabling trees to grow.
B. for the trees to grow.
C. for growing trees.
D. that enable the trees to grow.
E. that the trees can grow.
The best answer is D. In choices B and C the preposition for is used unidiomatically. In choice A the omission of the word the makes it sound as though these conditions are necessary for all trees.


3.      People can debate the aesthetic merits of these overwrought , disquieting , sometimes gruesome works of art , but no one can dispute their creators mastery of the paintbrush as a blunt instrument
A)but no one can dispute their creators' mastery of the paintbrush as a blunt Instrument.
B)but none can dispute their creators' mastery of the paintbrush as a blunt instrument.
C)But not a one can dispute their creators’ mastery of the paintbrush as blunt instrument.
D)but no person can dispute their creators' mastery of the paintbrush as a blunt instrument.
E)but none can dispute to their creators' mastery of the paintbrush as a blunt instrument.
The best answer is B. The use of none is idiomatically correct. Choice E is incorrect because dispute can only be followed by a direct object.



4.      For almost five thousand years after its beginning 2.5 million years ago, Homo habilis roamed the earth, lived in semi-permanent camps, gathered food and shared their economy.
A. For almost five thousand years after its beginning 2.5 million years ago,
B. Beginning 2.5 million years ago for a period of almost five thousand years,
C. Beginning a period of almost five thousand years 2.5 million years ago,
D. During five thousand years, a period beginning 2.5 million years ago,
E. Over a period of five thousand years beginning 2.5 million years ago,

The best answer is E. Choice E is precise and idiomatically phrased. Choice A is illogical because its refers grammatically to Homo habilis. Choice B is less clear and direct.

5.      Despite protests from some share holders, committee members have ordered the levels of department head involvement to be curtailed and that the advertising program be undertaken.
A. the levels of department head involvement to be curtailed and that the advertising program be
B. the levels of department head involvement to be curtailed and that the advertising program being
C. the measure of levels of department head involvement to be curtailed and the advertising program to be
D. the levels of department head involvement to be curtailed with their advertising program being
E. that the levels of department head involvement be curtailed and the advertising
program be

The best answer is E. Choice E clearly and correctly uses parallel phrases: the levels of department head involvement be…. The advertising program be…..

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