Had it not been for the fact that she was_________ with her work, she would have attended the concert
| A．occupied | B．absorbed | C．devoted | D．concentrated |
The buses, most of _______ were already full, were surrounded by an angry crowd.
| A．that | B．it | C．them | D．which |
When I arrived at the company, the manager ______, so we had only time for a few words.
| A．just went away | B．had gone away |
| C．was just going away | D．has just gone away |
David is such a good boy _______ all the teachers like.
| A．that | B．who | C．as | D．whom |
The thief tried to break away from the policeman who ______ him, but failed.
| A．has held | B．had held |
| C．was holding | D．would hold |
The factory was built in a secret place, around ______ high mountains.
| A．which was | B．it was | C．which were | D．them were |