—____ are you?—I’m twelve.

 ---Li hasn’t passed the driving test, has he?        ---     , though he tried his best.                           

— Tom’s never done extra work for his class, _______he?—_______. He is the laziest boy in his class.

— Your parents have never learned English, _____?— Yes, they learned a little.

——Mary hasn’t paid for the school things , has she ? ——_________. Her mother will pay for her .