----Tom, you do the cleaning after school, ________ you?
---- Me again? But I did the cleaning yesterday!

After the initial exchange of fire（第一轮交火）near the Yeonpyeong island(延坪岛), there was no further response from the DRPK,            ??

—John isn’t a football coach, is he?
—__________.

You won’t surf the internet before you finish your homework, ______ you?

-----________?
-----I think China is a great country with friendly people and a long history.

Nothing he did was helpful to solve this problem, _______?

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

It doesn’t matter if they want to come to your party, ______?

I told them not everybody could run as fast as you did, _____?

---- ____?   
---- Maybe the possible solutions to the air pollution.