Our nose and ears are important body parts. They are also used in many English expressions.Some people are able to lead other people by the nose. For example, if a wife leads her husband by the nose, she makes him do whatever she wants him to do.In a school, some students thumb their nose at their teacher. They say no to whatever their teachers tell them to do, like homework. Maybe these students don’t know the correct answers. If that’s the case, they should study hard and be all ears in class. This way, they are sure to understand their teachers and learn better.The last expression is to play it by ear. This has two meanings. One is to play a song on a musical instrument by remembering the tune and not by reading the music. Play it by ear also means to decide what to do at the last minute and not make detailed plans.