Nelson Mandela devoted all his life to the struggle of the African people and of every nation that seeks freedom．
| A．it | B．one | C．those | D．that |
They were still working in the fields __ it had got dark.
| A．even if | B．as if | C．in so far as | D．so that |
Are you ___ to make the best of time and catch up with your classmates?
| A．determine | B．determining | C．determined | D．making your mind |
I thought it would be rainly that day, but it ___ to be fine.
| A．turned up | B．turned out | C．turned down | D．turned back |
The fact ___ she was often late for school made her teacher angry.
| A．which | B．that | C．if | D．whether |
The scientist said videophone could be used ___ the conferences.
| A．into | B．at | C．for | D．to |