The questions that test Idiomatic usage are always tricky since if a test-taker is not aware of the idiom he or she can end up spending a lot of time trying to sort out other errors and might be going back and forth between options that are idiomatically incorrect. While it would be easy to give a long list of idioms to learn by rote, a list does not really serve any purpose since the list can become vast and cumbersome and there is no guarantee that you will able to retrieve this idiom from memory when you encounter it. A better way would be to scour the OG and look at the idioms that are consistently tested on the GMAT Sentence Correction.