1. There is no doubt that our educational system leaves something to be desired.
毫無疑問，我們的教育制度令人不滿意。
2. An advantage of using the solar energy is that it won t create any pollution.
使用太陽能的優點是它不會產生任何汙染。
3. The reason why we have to grow trees is that they can supply fresh air for us.
我們必須種樹的`原因是它們能供應我們新鮮的空氣。
4. So precious is time that we can t afford to waste it.
時間是如此珍貴，我們不能浪費它。
5. Rich as our country is, the qualities of our living are by no means satisfactory.
雖然我們的國家很富有，但是我們的生活質量卻令人很不滿意。
6. The harder you work, the more progress you make.
你越努力，你越進步。