--- He hardly spent any time on his subjects, ____________ ?--- _______________, so he does badly in his lessons. 

— You aren’ t a student , are you ? — _____ , don’ t you remember _____ me in the classroom ten minutes ago .

Of the two cities. I think Chongqing is ______ one.

You look tired. You’d better ______ up late.

Few of them hurt themselves in the accident , ______?