一、根据句意及中文提示写出所缺单词的完全形式
1.The 古董) which cost him millions of dollars finally turned out to be a fake.(
2.Steamboat travel opened a new 篇章)in America’s exploration of the west.(
3.I am fond of appreciating the 改编)of the plays written by Shakespeare.(
4.It was 慷慨的改编)of him to treat us to such a big dinner.(