Ex.4
a news report of less than 800 words
after reading your letter
a beautiful city by the sea
take a composition by a Chinese student for example
one of the 25 students (who are) chosen by the teacher
any school near your home
enter the boss's office nervously
a drastic change in climate
import fruits produced in tropical countries
be surprised at her ability in using English
the computer network that has connected/ wired the whole world
the importance of and difficulty in developing domestic market
lead the guests who have arrived to the garden
guests who have arrived
use some contents and language in this report
the general election that is going to be held in the US
find problems in the production process by studying the products
independent, democratic and prosperous
explain one's own purpose clearly
an anti-corruption film

Ex.5
1. 这是紧急情况。
2. 毁约是件耻辱的事。
3. 他说他不想接受那份工作。
4. 面临那种危险，我还能做什么？
5. 没人能轻松地做成那件事。
6. 他们两人的建议没有什么区别。
7. 我认为，那种决定毫无意义。
8. 你不能对我的请求毫不在意。
9. 我们要立刻和总部取得联系。
10. 你的计划给了我很大的帮助。
11. 他的信使我受了很大的伤害。
12. 顾客确实有权投诉。
13. 我真的想到车站送你。
14. 你认为他能照顾好他弟弟吗？
15. 我坚信，只要我们坚持就一定能够成功。