49. A. every B. all C. each D. none 50. A. first B. older C. young D. elder 51. A. is B. as C. be D. /
52. A. joined B. attended C. went D. joined in 53. A. popular B. unpopular C. welcome D. unwelcome 54. A. living B. turning C. ending D. changing 55. A. making B. make C. decide D. deciding
