49. A. argue B. doubt C . overlook D. admit
48. A. deal with B. look into C . point out D. take down
47. A. So B. Thus C . Since D. While
46. A. through B. across C. of D. on
45. A. Gradually B. Finally C . Luckily D. Hopefully
44. A. possess B. apply C. include D. develop
43. A. careful B. proud C. tired D. aware
42. A. beyond B. about C. over D. in
41. A. courses B. benefits C . challenges D. features
40. A. diary B, report C . note D. notice