9. My father was once the great physicist’s ________(助手).　　　　　　　 9 ____________

8. All the teachers went ________(楼下)to have a meeting.　　　　　　　　 8____________

7. The mother bear ________(生)two baby bears in the zoo last year.　　　　 7____________

6. He went to ________(德国)twice on business last year.　　　　　　　 6____________

5. The prisoners a_______ to escape but failed at last.　　　　　　　　　　 5____________

4. There is no more money needed for f________ research into this matter.　 4____________

3. Our library is a big one. There are all kinds of m________, books,

　 and even newspapers for us to read.　　　　　　　　　　　　　　　　 3____________

2. Tom always d________ of becoming a pilot when he was a boy.　　　　 2____________

1.The government is taking measures to improve the living c________ of the people in that area. 1.____________

6.satisfied　　　 7.realities　　　 8.envolopes　　 9.directly　　　 　10.natural