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Sentence corrections practice with answers and explanations for GRE, GMAT and SAT. ( Part -1)

Sentence corrections practice with answers and explanations for GRE, GMAT and SAT and IBA examination.
1.      In the thirties and forties, devotees of Willa Cather’s maintained that her writing has all the qualities found in the highest order of American writers of the nineteenth and twentieth century.
A. Cather’s maintained that her writing has
B. Cather’s maintained that her writing had
C. Cather’s have maintained that her writing had
D. Cather maintained that her writing had
E. Cather maintained that her writing has
The best answer is  D. The phrase devotees of Willa Cather presents a complete possessive without adding an apostrophe to her last name. Because the sentence describes a past event, the verb has in the present tense is incorrect.
2.      Robinson is a botanist whose dream is to reestablish an authentic pre-human piece of Hawaii, a place now awash with introduced species of plants and animals.
A. who has the dream to reestablish an authentic pre-human piece of Hawaii,
B. whose dream it is to reestablish an authentic pre-human piece of Hawaii,
C. who it is his dream to reestablish an authentic pre-human piece of Hawaii,
D. that is dreaming to reestablish an authentic pre-human piece of Hawaii,
E. whose dream is to reestablish an authentic pre-human piece of Hawaii,
The best answer is E. The pronoun whose is the best way to link the dream with
Robinson is a botanist.
3.      As literary criticism grows more complex, students majoring in specialized areas like those of post-colonialism and Marxist discourse have been becoming increasingly successful at finding positions in the faculties of top universities.
A. majoring in specialized areas like those of post-colonialism and Marxist discourse
have been becoming increasingly
B. who major in such specialized areas as post-colonialism and Marxist discourse are becoming more and more
C. who majored in specialized areas such as those of post-colonialism and Marxist discourse are being increasingly
D. who major in specialized areas like those of post-colonialism and Marxist discourse have been becoming more and more
E. having majored in such specialized areas as post-colonialism and Marxist discourse are being increasingly
The best answer is B. The phrase As literary criticism grows more complex introduces an ongoing condition that leads to consequences described in the rest of the sentence, which should be expressed with simple present-tense or present progressive. The use of like rather than such as is incorrect. In A, C, and D, those of is too wordy.

4.      The woodland sub-species were in isolation from contact with humans longer than either their marsh cousins or the tree-dwelling sub-species.
A. in isolation from contact with humans longer than
B. isolated from contact with humans longer than
C. in isolation from contact with humans longer than were
D. isolated from contact with humans longer than were
E. in isolation and without contacts with humans longer than
The best answer is D. The phrasing of the comparisons in choices A, B, and E is incomplete, so the comparisons are ambiguous. Choice D employs concise, idiomatic phrasing to express a logically complete comparison.
5.      Drinking milk enriched with vitamin D may significantly reduce the risk of rickets and also aid for sufferers of heart disease, according to studies recently completed at the University of California in San Francisco.
A. significantly reduce the risk of rickets and also aid for
B. be significant in reducing the risk of rickets and aid for
C. significantly reduce the risk of rickets and aid
D. cause a significant reduction in the risk of rickets and aid to
E. significantly reduce the risk of rickets as well as aiding

The best answer is C. Choices A, B and D each produce a clearly unintended meaning: by using aid as a noun rather than a verb, each creates a misleading parallel with the noun risk. Choice E lacks grammatical parallelism.

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