— He hardly spent any time on his subjects, _________?—_________, so he did badly in his lessons.

 ---Lemon used to be shy , didn’t she ? ---________ . But now she is outgoing as well as active.

–Mrs. Huang often speaks to foreigners, _________? –Yes, she wants to practice her spoken English.

She’s never late for class, ______?

It’s important ________ the piano well.