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daagh
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Let me ask a simple question. Are we right in using the pronoun it as in cure it or curing it? When we use that, we can see the aberration. The subject of the sentence is Tuberculosis and the pronoun it also refers to tuberculosis wherever it appears. Thus

In A: Tuberculosis …… . requires a complex therapeutic regimen for curing tuberculosis

In B: Tuberculosis ……… and requiring a complex therapeutic regimen for curing tuberculosis.

In C: Tuberculosis……… and requires a complex therapeutic regimen to cure

In D: Tuberculosis…… … and requires a complex therapeutic regimen to cure

In E: Tuberculosis ………..and requiring a complex therapeutic regimen for curing tuberculosis

The pronoun it turns redundant in Choices A, B and E and hence can be dropped. Between C and D, choice C is to be preferred for using the right adverb especially.
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The question is my own creation and I have already given my answer in my
previous post.
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As i saw in the Manhattan forum, especially is used for not good things while specially is used for good things.
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Tuberculosis, a major cause of death in most of the third world countries is an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen for curing it.

(A) an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen for curing it.
(B) an especially dangerous disease spreading through air and requiring a complex therapeutic regimen for curing it
(C) an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen to cure
(D) a specially dangerous disease because it spreads through air and requires a complex therapeutic regimen to cure
(E) a specially dangerous disease spreading through air and requiring a complex therapeutic regimen to cure it.

Tuberculosis, a major cause of death in most of the third world countries is an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen to cure.

With others (C) is the best, errors in other options highlighted in RED...
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daagh
Tuberculosis, a major cause of death in most of the third world countries is an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen for curing it.


my take: C

(A) an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen for curing it.
repeats two times IT

(B) an especially dangerous disease spreading through air and requiring a complex therapeutic regimen for curing it
removes the causality - so not good.

(C) an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen to cure
rectifies the only error in A.

(D) a specially dangerous disease because it spreads through air and requires a complex therapeutic regimen to cure
specially dangerous - changes the meaning

(E) a specially dangerous disease spreading through air and requiring a complex therapeutic regimen to cure it.
specially dangerous - changes the meaning
+ removes the causality

C looks the best to me.
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daagh
Tuberculosis, a major cause of death in most of the third world countries is an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen for curing it.

(A) an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen for curing it.
(B) an especially dangerous disease spreading through air and requiring a complex therapeutic regimen for curing it
(C) an especially dangerous disease because it spreads through air and requires a complex therapeutic regimen to cure
(D) a specially dangerous disease because it spreads through air and requires a complex therapeutic regimen to cure
(E) a specially dangerous disease spreading through air and requiring a complex therapeutic regimen to cure it.


The rule is: Use an before a word beginning with a vowel sound (not letter). It doesn’t matter how the word is spelled. It just matters how it is pronounced. Use a before a word with a consonant sound as well as y and w sounds.
So D,E : Eliminated

A,B & C : Curing it wrongly use in A &B (Tense error)

C is correct
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