He traveled to many mountain villages and saw many poor children out of school. This experience his life.
It's helpful to put children in a situation ________ they can see themselves differently.
—What do you think of teaching,Bob? —I find it fun and challenging.It is a job ________ you are doing something serious but interesting.
The weather turned out to be very good,________ was more than we could expect.
Is this the factory ________ he worked ten years ago?
Alice received an invitation from her boss,________ came as a surprise.