What do you think of teacher,Bob?—应该填什么?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

问题描述:

What do you think of teacher,Bob?—应该填什么?
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