一Middle school students don’t know much about shopping online, _______ they?
一 _______. It’s very popu]ar with teenagers.

Don’t make so much noise. Lily, _______?

— There is something wrong with your hike, ____?
— Yes. I'll have it _   tomorrow.
A. isn’t it; mend   H. isn’t there: mended       C. isn't it; mended      D. isn't there; mend

— You like listening to Sally's songs, don't you?
—_______.She has a sweet voice.

Don't open the door______?
A. aren't you       B. don't you           C. will you

His MP5 is very useful,      ?

The computer is very useful in our life, ________?
A. isn’t it       B. wasn’t it        C. doesn’t it

– Millions of people know about Susan Boyle now, __________?
-- _________, she becomes well-known because of her success on Britain’s Got Talent.

Doing sports is good for your health, _______ ?

Rita and Anna have finished their homework, ______?
A. have they   B. haven’t they  C. didn’t they