5. We can’t put off _____(have) the English exam. We must have it on time.

4. The dog is _____(hunger). Please feed it quickly.

3. What’s this called in English? It’s a _____(fly) disk.

2. I think eating fruits is much _____(good) than eating meat.

A：用所给单词的适当形式填空。(10分)

1. The knife on the table is used for _____(cut) wood.

We know that trees are useful in our everyday life. They 　 21 　　us many things, such as wood, oxygen, rubber, medicines and many other things. They can　　 22 　 tell us a lot about our climate. The following are the reasons. If you　　 23 　 　a tree, you can see that it has many rings(年轮). Most trees grow one new ring　　 24　 　year. Because of this reason, we know　　 25　 　a tree is. A tree over a hundred years old means that it has more than a hundred　　　 26　 . When the climate is dry or very cold, the trees do not grow very much and their rings are usually　　 27 　 . When it is wet and warm, the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the　　 28 　 　changed suddenly. If we look at the rings on this tree, we can learn about the　　 　29　 　for a hundred years. We can see　　 30 　 　our climate is changing today.

21.(　 ) A. tell　 B. ask　 C. give　 D. get

22.(　 ) A. not　 B. too　 C. to　 D. also

23.(　 ) A. cut down　 B. climb up　 C. walk past　 D. look at

24.(　 ) A. many　 B. every　 C. the first　 D. from

25.(　 ) A. how big　 B. how long　 C. how old　 D. how much

26.(　 ) A. trees　 B. leaves　 C. people　 D. rings

27.(　 ) A. big　 B. thin　 C. small　 D. thick

28.(　 ) A. climate　 B. trees　 C. things　 D. animal

29.(　 ) A. people　 B. things　 C. climate　 D. life

30.(　 ) A. how　 B. why　 C. when　 D. while

20.(　 ) You don’t need to describe her . I ______ her several times.

　　　　 A. meet　　　　　 B. have met　　　　　C. met　 D. will meet

19.(　 ) If it ________ tomorrow , we _______ go to the park .

　　　　 A. rains , won’t　　　B. will rain , won’t　　　C. rains , don’t　 D. will rain, will do