______is considered as the United States unique contribution to music.A．Rock and rollB．Jaz

It is implied that the author considers the International Monetary Fund as______.A．a total

______ is universally considered as Daniel Defoes masterpiece.A．The RivalsB．Robinson Cruso

______ , known as "the City of Angels", is the second largest city in the United States.A．

______is considered as the leader of the Imagist Movement in American literature？A．Ezra Po

______, written by Frederick Douglass, is generally considered as the first significant bl

______is（are)considered as "the backbone of the continent" in America, and is（are) also kn