A:背书包
B:用刀切菜
C:铁轨枕木
D:滑雪板
根据所提供的材料,填写相应的人物或情节。
根据句意, 用括号内所给单词的适当形式填空。
Vienna is famous for having many great musicians. ____, Johann Strauss the younger wrote hundreds of wonderful pieces of music there.