SC's Question number - 861 , 862

861). Those who enter marathons soon learn that, to succeed in these grueling competitive events, runners must be in excellent condition, have unshakable self-confidence, and, most important of all, know how to pace yourself.

(A) know how to pace yourself

(B) is knowing how to pace yourself

(C) know how to pace themselves

(D) you must pace yourself

(E) they must know how to pace themselves

862). Those with a cynical turn of mind might speculate if the new corporation, eager for profit, might not have started the rumor that caused its competitor to declare bankruptcy.

(A) speculate if the new corporation, eager for profit, might not have started

(B) speculate if the new corporation, eager for profit, had not started

(C) speculate if, in its eagerness for profit, the new corporation started

(D) wonder as to whether, in its eagerness for profit, the new corporation did not start

(E) wonder whether the new corporation, eager for profit, had started


Answers:

861). OA - C

A, B, D - incorrect - yourself is wrong

E - incorrect - violates parallelism

862). OA - E

A, B, C - incorrect - use of if - for whether vs if visit the link below

http://gmat-grammar.blogspot.com/2006/07/whether-vs-if.html