1. It is very easy to skycycle tubes.
2. The green bike is mine.
3. Are you interested in flying cars?
4. You should go such a long way by bike.
5. Although electric cars cause no pollution, they still cause traffic jams.
6. Sue is talking to one of her friends.
7. When I was in secondary school, I usually went to school on foot.
8. GPS technology will be used to increase accuracy and shorten routes.
