___________she was invited to the ball made her very happy．
| A．If | B．That | C．When | D．Because |
The houses are specially _____ and built for those home-lost people.
| A．decorated |
| B．designed |
| C．managed |
| D．removed |
He went to the couch and _____ it, uncertain what to do next.
| A．got into |
| B．sank into |
| C．looked into |
| D．sat down |
While they were playing, a bomb _____ on the Bay Bridge, and one boy was injured seriously.
| A．explored |
| B．fought |
| C．exploded |
| D．happened |
As a result of the report many villagers rushed to the mountains _____ gold.
| A．in search of |
| B．in search for |
| C．in the search of |
| D．to search of |
What can we do for them _____ for all the help they have given us?
| A．in turn |
| B．in return |
| C．by turns |
| D．out of turn |