—Alice had nothing for breakfast this morning, ________? —No. She got up too late. 

 —President Obama has never been to Beijing, ______ he? — He visited the Great Wall on the afternoon of November 18th,2011.

Linda was unhappy when you went to see her, _______?

----Who swept the classroom?----  I_________.

.---Your brother doesn’t get up early, does he?   --- _______. But he gets up late on weekends.