Question

.—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
应该选什么？为什么？求详细解释！！！

Answer 1

选B，定语从句，先行词是no one else ，作turn to的宾语。
完整的句子如下：
---there is no one else that she can turn to （for help），is there?