I watch sports news in the evening every day. I know a lot about s( ).I am going

I watch sports news in the evening every day. I know a lot about s( ).I am going
to be a referee,"Tom said. "What referee are you going to be ?"the teacherasked. "A boxing referee,"Tom answers."Why?"the teacher asked. "A boxing referee only c()from 1 to 10," Tom said.
首字母已给，帮下忙，谢谢！！