【题目】 --Why does she always ask you for help?
--There is no one else________,is there?
A. who to turn to B. she can tum to
C. for whom to turn D. for her to turn
在线课程【答案】B
【解析】
试题分析：先行词是no one else，定语从句she can tum to前省略了作宾语的关系代词whom或who。值得指出的是，本句还可以写成to whom she can turn。