1. With the development/improvement of ——,——. 2. It is necessary that——. 3. On the one hand, ——. 4. On the other hand, ——. 5. Therefore, how to —— is worthpaying attention. 6. Firstly—— 7. Secondly—— 8. For example,—— 9. Thirdly, ——. 10. In other words,—— 11. In fact, ways to —— arecountless. 12. It’s time that ——
1. Some people believe that——. 2. The truth is deep andprofound. 3. As we know,——. 4. In addition,——. 5. There are numerous examples —— 6. A case in point is—— 7. There is close to suggest—— 8. For another example—— 9. Moreover,——. 10. All mentioned above tell us—— 11. But one thing we have tonotice is that —— 12. In a word, ——