Only then, _____we ____that the trapped miners were in danger when the flood water dripped into the tunnels.
| A．have; realized | B．did; realize |
| C．do; realize | D．had ; realized |
The most important thing ______they need is more time .
| A．what | B．that | C．which | D．in which |
I lived in Beijing,_____is the capital of China.
| A．which | B．where | C．that | D．what |
After five hours’ drive ,they reached _____they thought was the place their parents had lived many years ago .
| A．that | B．where | C．which | D．what |
---I can’t find Mr. Smith .Where did you meet him this morning ?
---It was in the hotel ______he stayed .
| A．that | B．which | C．the one | D．where |
Was it from the internet_____you learned the news _____a big fire broke out in the firework factory ?
| A．that ;which | B．that ;that | C．where ;which | D．where ;that |