她总是喜欢在餐桌上对孩子们讲大道理，说他们应该更加节俭。

She always ___sermonizes at the dinner table, telling the kids they should be more frugal.

每次开会他都要长篇大论地说教，讲些无关紧要的细节。

He always ___sermonizes about trivial details during meetings.