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 1.h
and crossing the road is not safe. These bridges can help people cross roads 2.s .Overhead bridges
are used in very much the same way as zebra crossings(斑马线).They are more efficient(效率高的),
3.t less convenient(方便的)because people have to climb up a lot of steps. This is inconvenient to
the old. When people 4.u 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 5.w the government(政府)has
built many overhead bridges to help people and 6.k traffic moving at the same time. The government
of Singapore has 7.s 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 8.d climbing up
and down the steps, but it is still much safer than walking across the road 9.w all the moving traffic.
Overhead bridges are very useful. People, both old and young, should always use them. This will stop
accidents from 10.h .