30. -How can we live on100yuan a month?

　　 -Don’t worry. I’m sure things will turn out all right_______.

A. in the end　 B. by the end　 C at an end　 D .at the end

29. The police thought the big fire was not an accident but was set__________

A .on purpose　 B. for example　 C. on time　 D .at once

28. As you know, British children _____________have lunch at school.

A. exactly　 B. gradually　 C. generally D. fluently

27.I realized it was __________trying to persuade him to change his mind ,so I kept silent.

A. useless　 B. helpful C. official　 D .upset

26. In　 western countries ,people usually give ______________to taxi drivers after their journeys.

A .tips　 B licenses　 C. suggestions　 D. directions