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.