单项选择题The writer of Childe Harold's Pilgrimage is ______.
单项选择题Among the pioneers of the 18th century novelists were Daniel Defoe, Samuel Richardson, Henry fielding and ______.
单项选择题______ is the center of British financing system.
单项选择题In the early time of 20th century, ______.
单项选择题Which description of the blues is right