You never eat burnt barbecued meat, _______?

—Are your parents at home? —No, they aren’t in. They _________ to Beijing.

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

He hardly had anything to eat, ________ he?

 —You didn’t go to school yesterday, did you? —_____ , though there was a heavy rain.