21£®Some of the exercises appear to be _____ones that you have done, but after taking ____second look, you will find that they are different.

    A. /, the        B. the, the             C. the, a                D. /,  a

22£®She used to be terribly shy, but a year abroad has completely _________ her.

       A. transmitted               B. transported               C. transplanted              D. transformed

23£®Some people tried to separate our country by taking illegal action, which didn’t exactly  _____ racial harmony.

       A. make it                    B. make for                  C. make out                  D. make up