21. squeezed out　 22. in place　 23. carried off　 24. makes no difference to　 25. once again/over again　 26. sticks to　 27. put/lay my hands on　 28. on the point of　 29. as if to speak　 30. As

用这一年最大的“投资”获得这一年最后最大的“回报”，否则就是最大的“亏损”！

----- 三人工作室

5. for the present 暂时　 presently　 现在

(20)1. He didn't pass the exam, but it was a good attempt.他虽然没有通过考试，但他做了很大的努力。 2. My first attempt at a chocolate cake tasted horrible.我首次试做的巧克力蛋糕难吃极了。

(21)参考《三维设计》216页“佳篇诵读”。

3.He turns 21.他21岁了。

(19)1. We learn from the past, experience the present and hope for success in the future.我们从过去中学习，体验现在，展望未来的成功。 2. He presented her with a bunch of flowers.他献给她一束花。 3. How many people were present at the meeting?有多少人出席会议？ 4. I'm afraid I can't help you just at present I'm too busy.很抱歉，我现在帮不了你－－实在太忙了。

2.He turned teacher.　 /　 He became a teacher.他成了老师。

2. A new system of taxation will be brought into effect next year. 新的税收制度将于明年实行。 3. The advertising campaign didn't have much effect on sales.这些广告攻势对销售额并没有起到多大作用。

(18)1. The students clean the classroom every day in turn. 学生们每天轮流打扫教室。

5.I was convinced that he knew the truth.我确信他知道事实。

(17)1. The climate affected his health.气候影响了他的健康。

4.I am convinced of his honesty.我对他的诚实深信不疑。

2.The bus was badly damaged when it hit the wall.

(16)1. He convinced me of his sincerity.他使我确信他的真诚。 2. Your argument is too weak to convince me.你的论点太薄弱了，说服不了我。 3. We utterly failed to convince them.我们根本说服不了他们。

7.She treated him to lunch.她请她吃午饭。

(15)1. The flood did a lot of damage to the crops.洪水毁坏了大量农作物。

5. I tried every treatment the doctor suggested.我试遍了医生建议的每一种疗法。 6. Their treatment of women is unspeakable.他们对待妇女的方式恶劣得难以言表。