30. His efforts to raise money for his program were　　　 because no one showed any intention to take a cent out of their pockets. 　

A. in place　　　 　　　B. in sight　　 　　　　C. in effect　　 　　　D. in vain

29. You’d sound a lot more polite if you make a request 　　　a question. 　

A. in search　　　 　　B. in the form of　　 　　C. in need of　　 　　D. in the direction of

28. The questionnaire takes 　　　　ten to fifteen minutes to complete and can be used along with the assessment interview. 　

A. mainly　　　　 　　B. punctually　　　　 　C. approximately　　 　D. precisely

27. As there is less and less coal and oil, scientists are exploring new ways of making use of　　 energy, such as sunlight, wind and water for power and fuel. 　

A. primary　　　　 　B. alternative　　　　 　C. instant　　　 　　　D. unique

26. in our class, when the bell rang and the teacher closed his book, it was a　　　 for everyone to stand up. 　

A. signal　　　 　　　　B. chance　　　 　　　C. Mark　　 　　　　　D. measure