39. A. enough B. comfortable C. less D. a lot
38. A. some B. many C. other D. different
37. A. require B. request C. depend D. suggest
36. A. cost B. spend C. ask D. take
35. A. difficulties B. differences C. advantages D. things
34. A. marks B. sights C. scenes D. signs
33. A. can B. need C. will D. must
32. A. includes B. to include C. including D. included
31. A. make sure B. remember C. expect D. check out
30. A. that B. very C. not D. quite