One would like to know how long it usually takes to finish the MGMAT SC Study Guide? With the Questions and exercises from the Verbal and Official Guide? For people who have near native command of the language.
Perhaps it would be useful to have a survey or polling of responses as to how long it took other students to finish the Setence Correction GMAT Strategy Guide by Manhattan GMAT?
One knows that one would find it useful for one's own studying.