He’s never late for class, ___________he?

I won’t believe that the five-year-old boy can read magazines ____ I test him myself. 

--- Jim’s seldom been late for school, _____?  ---______. He always gets to school on time. 

—He made few mistakes in his speech, ______________?   —____________, his perform is wonderful.

– David’s seldom late for school, ______ he? -- ______, even though the weather is very bad.