北伐战争推翻的北洋军阀有（）
A.段祺瑞
B.张勋
C.吴佩孚
D.孙传芳
参考答案：C, D
—She is too busy to help us finish the work.
—Let's do it__________. [ ]
A. herself
B. my self
C. ourselves
D. itself
西佛星系
