1-5 CBCBA  6-10 CCBCC  11-15 CCBBB  16-20 ADBEC
21-25 ACBDD   26-30 BBCCB  31-35 ACCDC
36--40   BACBD  41--45    CADBD
46-50 BACCB    51----55     CCBDB
56-60 CDACB     61----65    DACBE 
66.gave  67. into 68. found 69. Finally 70. passed  71. by  72. well  73.never  74. just 75. bad
76. Where are you going to spend this summer holiday
77. I’ll visit some museums.
78. I’m sure you’ll enjoy yourself there
79. I haven’t decided yet.
80. That’s great.