Myfatherisgettingold.Heneedsastick

问题详情：

 My father is getting old. He needs a stick _______ to walk.

A. in which                                                      B. by which

C. with which                                                  D. with whom

【回答】

解析：选C。句意：我父亲一天天变老了，他需要一个拐杖来辅助他走路。a stick后接一个with which to walk的定语，相当于with which he can walk这个定语从句。with. . . “用……”。而其他介词不符合题意。

知识点：定语从句

题型：选择题