参考答案：

　　11-15 BACAB 16-20 CBAAC 21-25 CBBCA

　　26-30 BBBAC 31-35 CBCBB 36-40 CBAAC 41-45 CBCAA 46-50 ACCBC 51-55 EABFC 56-60 BBAAA 61-65 BCBBC 66-70 ACCBB

　　71. famous for 72. spent, in writing 73. are liked

　　74.范文：

　　Dear grandpa and grandma,

　　How are you?

　　I’m doing well at school now. My father and mother are pleased with my marks. Of all the subjects I like maths the best. I’m also interested in English. Our summer holiday begins on the fourth of July. I want to spend the holiday with you, and my parents agree with me. Now I’m looking forward to seeing you again.

　　Mimi