— He’s often seen to help others,     ?—       . He’s helpful. We all like him.

Mr Li ’s never seen such beautiful flowers , _______?

--- There is little water left in the bottle, ______? --- No, we need to buy some more before we run out of it.

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

 －Your parents have never learned English,           ?－Yes, they learned a little.