sandy wrote:
Explanation
Recycle the clue sanctimonious and self-righteous into the blank. Both ingenuous and unaffected are nearly the opposite of what you’re looking for, so eliminate choices (A) and (F).
Neither punctilious, which means overly concerned with precise formalities, nor salacious, which means obscene, is supported by any clues in the sentence, so eliminate choices (C) and (D). Both moralistic and sententious can mean sanctimonious and self-righteous, so choices (B) and (E) give you appropriate, equivalent sentences.
Please help to explain, if he wasn't aware that his message was undermined by his sanctimonious --> (I supposed that) then he would believe every like him --> then he must be startle finding that everybody HATES him, and considers him ingenuous or unaffected, please correct my understanding