10. The Internet games are a_______ to some young people.

9. The former USSR(苏联) b______ up many years ago.

8. The assistants of the library are s_________ out the books.

7. The boy sings so well that he dreams of being a m__________ tomorrow.

6. After the lunch we parted, so I didn’t know what happened to him a_________.

5. Increasing numbers of people are _____________(敏感的) to pollen(花粉).

4. I gave up because I didn't have any ____________ (自信心) in myself.

3. They started to play their own _________ 　(乐器)and write their own songs like a real band.

2. He expressed it in the __________ (形式)of music.

1. The doctor is ___________ (执行)an operation now.