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

―He’s never advised to achieve a balance between his job and hobbies, ________? ―Yes. His parents and teachers often offer him some advice.

--- Datou Ge Hongyu made few mistakes in the competition of singing, ________ ? --- _____________. I think his perform was the most wonderful in The Voice of China.

English is very useful ,____it?

The book was written in _______ easy English _______ even primary school students could understand it.