You can take any seat is free.A. whichB. whereC. in whichD. that

问题补充：

You can take any seat is free.

A. which

B. where

C. in which

D. that

答案：

A. which

B. where

C. in which

(答案→)D. that

解析：考查定语从句：句意：你可以做没有人做的任何座位。先行词是any seat，定语从句中缺少主语，应该用关系代词引导定语从句，因为先行词是any这个不定代词修饰的，所以只能用that引导定语从句，选D。