walk way without prevent easy
Trees are useful in three important 96 .The most important way is that they provide man with food , wood and other products. Trees provide food not only for man, but also for animals. 97 trees, many animals could not live on the earth. It's not 98 for man to live on the earth, either.
The second important way is that trees give us shade(树荫). On a hot summer day, people are eager to have a rest under the shade of a tree after 99 a long way. You can imagine how important the shade of a tree is to man and animals.
The third important way is that trees help to 100 droughts and flood. However, in many parts of the world, man hasn't realized it. He has cut trees down in large numbers. In the end, he finds that he has lost the best friends he had.
答案：96. ways 97 Without 98.easy 99. walking 100. prevent
31.We're in the _________ grade now.And we will have a very important exam in June.
32.In Britain people not only use__________to cut things,but also use them to have meals.
33.-Bob,have you _________up your things on the floor?
-Not yet,Mum.I am still busy with my homework.
34.On weekends,the supermarkets are usually ________with people.
35.-Excuse me,would you tell me where I can buy some shampoo?
-Sure._________the post office,there's a small supermarket.
答案：31.ninth 32.knives 33.picked 34.crowed 35.Beside