问题补充：
1. A heavy flood caused the bridge to ; now, no one can cross the river without boats.
2. Susan has been crying a lot since her sister died a year ago; it seems that she could never from the heavy loss.
3. Its sometimes considered bad manners to on the table while eating, so please be careful not to do so.
4. After crying for some time, she looked at her face in the mirror, only to find she was such a sad and plain-looking girl.
5. I had to hold tightly the handrails (扶手) along the hall to keep myself from losing my balance on the floor.
6. The man phoned the police and later went to the police station to look at photos to the robbers.
7. The imperial examination system, which started in the Sui Dynasty, was in 1905.
8. Many smokers choose to the fact that smoking is harmful to health and refuse to stop smoking.
9. He no longer had a(n) for further education because he thought the costs were too high.
10. Although she often seemed quite cold and strict, her smiling eyes her true nature.
