英语定语从句填空.第一个空填介词,第二个空填whom或which.

1.in which
in which = in her bag
所以：in which she put all her books
= she put all her books in which
= she put all her books in her bag
2.of which
of which = of the stories about the Long March
所以：of which this is one example
= this is one example of which
= this is one example of the stories about the Long March