．________ surprising it is you should not know what has happened!
| A．What | B．How |
| C．That | D．It |
It's helpful to put children in a situation ________ they can see themselves differently.
| A．that | B．when | C．which | D．where |
—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 |
The weather turned out to be very good，________ was more than we could expect.
| A．what | B．which | C．that | D．it |
Is this the factory ________ he worked ten years ago?
| A．that | B．where | C．which | D．the one |
Alice received an invitation from her boss，________ came as a surprise.
| A．it | B．that | C．which | D．he |