They lived a hard life and were often made _______ for over ten hours a day.
| A．work | B．to work |
| C．to working | D．worked |
We often call Martin Luther King M.L.King .
| A．in short | B．for short | C．at short | D．to short |
Look out the traffic when crossing the road.
| A．at | B．of | C．for | D．with |
The bridge is 1000 meters length.
| A．with | B．in | C．at | D．on |
The two countries were between 1989 and 1992.
| A．peace | B．at no war | C．at peace | D．at peaceful |
The oil must be used up, the light went out.
| A．for | B．because | C．since | D．as |