Jim knows the way Australians speak, _____ he? 

—You haven’t been to the USA, have you?—      But how I wish to go there again!

This math problem is too difficult. Can you show me________, George?

— You like listening to Sally's songs, don't you?—_______.She has a sweet voice.

----“It’s too cold. Would you mind_________ the window?”  ----“_____. But don’t do it now.”