词汇和语法（Vocabulary and Structure)220题复习(2)

21. Poor educational performance is sometimes related to emotional disturbance.
22. Researchers sometimes become frustrated when their efforts appear to have produced less obvious results.
23. Once the excitement of watching TV all day has worn off, holidays can be boring.
24. It was considered impolite by many to discuss business on social occasions.
25. Doctors have decided the only way he can live anything near a( n) normal life is to give him an operation.
26. It is very important for the staff to dress in something appropriate to the job.
27. After running through the numbers in every possible combination, we finally hit on a solution.
28. Either he escaped, or he was put in prison; in any case, he was never seen again.
29. We should put aside our differences and discuss the things we have in common.

30. Seldom did we realize that many of our hair problems result from what we eat.
31. Mark needs to travel extensively with his varied business interests.
32. A country whose birth rate is higher than its death rate will have an increasing population.
33. There is nothing about women giving up careers to look after children.
34. A recent poll suggested that if money were not an issue, most people would prefer not to work at all.
35. It is worth remembering that even the most complex scientific ideas can eventually affect one’s daily life.
36. The degree to which you maintain your mental health may depend on certain simple environ mental factors.
37. Scarcely had they settled in their seats in the cinema when the film began.
38. This project is said to be being carried out right now and so far everything is going on quite smoothly.
39. It is generally agreed that the Internet has brought people

together more than has any other invention.
40. Whatever the price, it is a thousand times worth it.