Nine thousand guests took part in the outdoor ceremony, that impressed so many people at the White House．
| A．that | B．this | C．it | D．one |
Not until he walked into the classroom that he left his dictionary at home.
| A．did he find | B．had he found |
| C．he had found | D．he found |
it has turned out, there was no need to worry about their safety.
| A．While | B．As if |
| C．Now that | D．As |
Having arrived at the destination, we were shown around they had lived before.
| A．what | B．that | C．in which | D．where |
I have learned from my bitter experience we don’t know
we’ve got until it’s gone.
| A．that; that | B．what; what |
| C．that; what | D．which; that |
(2013·安庆模拟)That weekend, I have more to tell you about, I ended up with a happy hike.
| A．that | B．which |
| C．what | D．when |