___________your twin brother’s name Nick? – Yes, ________ is. 

—Nothing wrong with it, ____________?— Yes. The computer says, “Please check this disk before entering data.”

There is little doubt in your mind that he is innocent,             ? (2012江苏)

I told you the other day that Tom had agreed with your idea, ____________?

All the clothes donated by the citizens need cleaning thoroughly before being sent to the earth-stricken area, ______ ?