1. Every country has buildings which are very symbolic. 

2. Scientists are trying to find a for cancer.

3. Historical buildings need to be because they get older. 

4. The government should promote the of its society. 

5. Every develops new customs and behaviour.

6. has made our way of life more convenient.

7. If we don't take care of our , mother nature will fight back. 

8. Modern have simplified our way of life.

9. All humans need to have physical and social . 

10. The government should invest in research which improves our society.

11. The of our planet depends on how humanity takes care of it. 

12. We should have more activities to promote multiculturalism. 

13. It is important for every nation to its history.

14. Tourists usually viist some of the important of the country.