Hello Ron,
I have questions regarding 700-800 level SC questions and focusing on appropriate material to study.
I've noticed on the MGMT CATs that the upper-level SC questions generally test some more nuanced grammar topics and idioms... i.e. correlates to/with, testing the use of 'yet' as a second clause after 'not only x but also y' etc. in addition to long, convoluted sentences with misplaced/incorrect modifiers.
What is your advice on preparing for the tougher SC questions and getting through the questions quickly i.e. 1:30 or less?
Are there more nuanced areas that you have seen the GMAT test recently, i.e. punctuation, quantity, odd idioms that I should particularly focus on?
Thanks!