What great trouble she was in___she needed help while there was no one else she can turn to!A.in whichB.whenwhy we choose B

What great trouble she was in___she needed help while there was no one else she can turn to!A.in whichB.whenwhy we choose B
What great trouble she was in___she needed help while there was no one else she can turn to!
A.in which
B.when
why we choose B

What great trouble she was in___she needed help while there was no one else she can turn to!A.in whichB.whenwhy we choose B
当.的时候

你问题多打了一个in吧``
如果没有对打，，那很明显是b。，因为一句句子中prep是不可能重复在一起的，~~
如果多打~ 那也是b`` 表示当什么什么时候