一、 ：
A). ACCB B) 5—8 BCACX 10-14 XXXXX
C）15-20 BCA CAC
二）21-25 BBDAD 26—30 CBDBB 31-35 DCDDD 36-40 BACCC
三） ABBCD　　ABCDB
四） A) ADCBB B) CDBBD C) BBDCA
五） GCFAD
六） 71. be worried/nervous; 72. coming out 73. learnt/learned from
74. pocket money 75. takes up
七） 76. Skin-diving 77. During the day 78. blue and green
79. When you have tanks of air on your back. 80. To catch fish.
八） 81. heroes 82. reason 83. (to ) talk 84. answer 85. because 86. yourself 87. same 88. place 89. feel 90. playing

九、Sports in our school
Sports in our school have changed a lot．Now we have more than three PE classes every week，and we have at least one hour to exercise every day．
Students get so excited about these changes．More and more students take an active part in the ball games，running and jumping on the playground．
Our school life is becoming more wonderful．Doing sports is a good way to relax and keep healthy．What’s more，a healthy body can help us study better and live a happier life.