根据短文内容及首字母填空。

     Overhead bridges can be seen in many parts of Singapore, in the places where traffic is very h 1  and

crossing the road is not safe. These bridges can help people cross roads s 2 . Overhead bridges are used

in very much the same way as zebra crossings (斑马线). They are more efficient (效率高的), t 3  less

convenient (方便的) because people have to climb up a lot of steps. This is inconvenient to the old. When

people u 4  an overhead bridge, they do not hold up (阻挡) traffic. But when they cross a busy road using

a zebra crossing, traffic is held up. This is w 5   the government (政府) has built many overhead bridges

to help people and k 6  traffic moving at the same time. The government of Singapore has s 7  a lot of

money building these bridges. For their own safety, people should be advised to use them instead of rushing

across the road. Old people may find it a little  d 8  climbing up and down the steps, but it is still much

safer than walking across the road w 9  all the moving traffic. Overhead bridges are very useful. People,

both old and young, should always use them. This will stop accidents from h 10  .