---Very few students passed last monthly exams, ______?---Yes. They all passed because they did good preparations before the exams.

_______ bottles of water do you want?

— I often chat with my friends on the Internet.— You are so smart! Will you please tell me____?

E-mail is very popular today.  People seldom write letters now,_______?

—Judy’s never been late for school, ________ she?—________. She is always the first to get to school every morning.