Some doctors were sent t?the front where medical workers were ＿＿＿.

A．in great need

B．in great need of

C．needed great

D．needed in

评价和比较是学习历史必须具备的基本能力。华盛顿、拿破仑作为资产阶级革命家、政治家，他们的历史活动都   

A．赢得了民族独立

B．打击了封建势力

C．实现了国家统一

D．推进了民主政治