21. We don’t need to do extra work this evening. The day’s work was almost ______ now.

  A. at the end      B. at an end           C. at one end                D. at our end

22. Today we have reached a stage ____ we have almost no rights at all.

     A. when  B. where   C. which   D. that

23. Once she has ___,nothing can change it.

     A. make up her mind     B. made up her minds

     C. made up her mind     D. make up her minds