I was reviewing the book Foundations of GMAT Verbal and got confused on page 91 (chapter 5) when it said, words like thus, therefore, moreover and nevertheless can also be used after semicolons in the way that however is used.
My questions are:
1. Can "However" only be used in the follow way: ".....; however, ...."?
2. Are words "thus, therefore, moreover" HAVE TO be used the same way as above, or is that optional?