—Why does she always ask you for help?
—There is no one else , is there?
A. who to turn to
B. she can turn to
C. for whom to turn
D. for her to turn
网友回答
A. who to turn to
(答案→)B. she can turn to
C. for whom to turn
D. for her to turn
解析：把定语从句还原成一个句子，即:She can turn to no one else(for help).答案就明朗了。