— What do you think of teaching, Bob? —
题型：选择题
问题：
— 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
— 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