1. David got on the taxi and gave the driver the address of his hotel

2. Tom got off the bus at the wrong bus stop, so he walked from there to school

3. He managed to sail the boat between the rocks

4. I was stuck in a traffic jam for an hour yesterday 

5. I usually cycle home through the park

6. There are millions of people in that African country who are living in poverty  because they have no jobs

7. overpopulation is one of the country's most pressing social problems

8. In Africa many people die of hunger each year

9. Hong Kong has a high population density , over six thousand/km²

10. The living standard in many developing countrics is low