You went to the concert yesterday, ____ ?

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

You've just finished your listening exam. Please get yourself ready for the next part,       ?

We can't work out the physics problem. Can you tell us         ?

-The captain（船长）of the Sewol ferry（岁月号）hardly do anything to help the passengers on the ferry。          ？-              ，so over two hundred people lost their lives in the accident。