II. There is one mistake in each sentence. Find and correct it
1. Sue used to went to school by bike when she was a little girl. _
2. People in country villages used to travel by foot long, long ago. _
3. Traffic police should keep regular check on the speed in motor vehicles. _
4. Traffic jams cause deaths and air polluted. _
5. To avoid traffic jams, you should leaving before the rush hours. _
6. Traffic jams cause delays and make people late in work. _
7. There didn’t use to have as many cars on the road as nowadays. _
8. Bad roads is the main cause of traffic accidents. _
9. The distant between my house and school is about 2 kilometers. _
10. Planes are regarded as the safest and fastest mean of transport. _