35. A. in B. at C. with D. from

34. A. safer B. more safer C. dangerous D. more dangerous

33. A. difficult B. different C. worried D. excited

32. A. used B. made C. spent D. borrowed

31. A. keeping B. kept C. keeps D. keep

30. A. what B. why C. when D. where

29. A. we B. she C. he D. they