35. We are taught that business letters should be written in a formal style ______in a personal one.

A. rather than　　 B. other than　　 C. better than　　　 D. less than

34. We are kept ________ of what is happening in the world by reading newspapers and watching television.

A. to inform　　　 B. to be informed　　 C. informing　　　　 D. informed

33. Once　　　 what to do, these computers will show great power in carrying it out.

A、to teach　　 B、teaches　　 C、teaching　　　 D、taught

32. Don’t be so nervous. There is nothing to _____________.

A. be worried　　　　　 B. worry　　 C. worry about　　　 D. be worried about

31. The squirrel was lucky that it just missed　　　 .

A. catching　　　 B. to be caught　　 C. being caught　　 D. to catch

30. If we work with a strong will, we overcome any difficulty, ____ great it is

A. whenever　　 B. whoever　　 C. whatever　　 D. however