With more than 17,000 islands, __________ only 6,000 are inhabited, Indonesia is the world's largest archipelago(岛国）.
| A．on which |
| B．for which |
| C．of which |
| D．along which |
When he the door, he found his keys were nowhere.
| A．would open | B．opened | C．had opened | D．was to open |
My parents in Hong Kong. They were born there and have never lived anywhere else.
| A．live | B．lived | C．were living | D．will live |
The art show was being a failure; it was a great success.
| A．far from | B．along with | C．next to | D．regardless of |
The place the bridge is supposed to be built should be the cross river traffic is the heaviest.
| A．which; where | B．at which; which | C．at which; where | D．which; in which |
Students are always interested in finding out they can go with a new teacher.
| A．how soon | B．how often | C．how long | D．how far |