(·北京 26)—What do you think of teaching Bob?—I find it fun and challenging.It is a job

问题补充：

(·北京，26)—What do you think of teaching，Bob?

—I find it fun and challenging.It is a job you are doing something serious but interesting.

A. where

B. which

C. when

D. that

答案：

(答案→)A. where

B. which

C. when

D. that

解析：考查关系代词的选用。where引导定语从句修饰job，where相当于in which(in the job)。句意：——我认为它有趣并且充满挑战。它是一项严肃而有趣的工作。