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 .

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