2.(　　　 )A.easy　　　　　　　　 B. boring　　　　　　　　 C .early　　　　　　　　　 D .dangerous

1.A.use　　　　　　　　　 B. write　　　　　　　　　 C. copy　　　　　　　　　 D. miss

　Last Sunday, April 10, my classmates and I all went to plant trees on West Hill. As we know, trees are very important to us and they give us oxygen. They can purify the air, hold water when it rains and beautify our environment.

　It is said that everything has a hard beginning. At first, we did not know what to do. So we had to ask a farmer for help. He showed us the right way and taught us carefully to plant trees. Then we did as he told us.

　First of all, we dug a large hole for each tree. Then we knocked a long strong stick into the earth next to each hole. We put the trees in the holes and made sure that they were straight. Then we put the earth back in the holes again and pushed it down hard with our foot several times. After that, we tied the trees to the top of the sticks to keep them straight. At last we began to water the trees as much as possible. We thanked the farmer several times because we learnt a lot from him and he was very happy to have us as his students.

　That day we worked from morning till late afternoon. Though we were rather tired, we had a great time.

5. help, stop, floods

4. Thanks to, rich, is sawed

3. In, way, are prevented

2. must be handed in

9. straight　10. often

　B) 1. comes, to plant　

2. be planted, be stopped, blowing, be stopped, moving, have, planted, be needed, see

　C) 1-6 BDBBAD

6. corrected　7. pointed　8. northern　9. straight　10. notice

　B)1. be grown, grown, be harvested, be harvested