24. Taking exercise is closely related to health.
25. The condition of our traffic leaves much to be desired.
26. …change the course of history…
…turn over a new leaf…
…shape the destiny of a nation…
…shape the world…
…break a new ground…
27. Smoking has a great influence on our health.
28. Pollution poses a great threat to our existence.
29. We shall do our utmost to change and reverse the current situation.
30. Time is more than money.