从每题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项
21.She defended she was______ and_____ she would never betray her country.
A. innocent, what B. pure, that C. innocent, that D. innocent, /
22.It was in that week_____ she got married_____ she adopted a baby girl.
A. when, in which B. when, that C. in which, when D. that, when
23.Chinese medicine is popular in many countries ______its place in the World Medical Science.
Which of the following is wrong?
A. regardless of B. due to C. owing to D. thanks to
