问题
选择题
—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
A 考察定语从句。本题定语从句的先行词是job，从句的结构是主谓宾结构，定语关系代词在从句中只能充当地点状语，故A正确。