Have some tea, ______?
Nobody knows ______ in 100 years.
– David’s seldom late for school, ______ he? -- ______, even though the weather is very bad.
Many students don’t know how to ______ stress and become worried.
-- Tony, do you know if Frank ______ to the park with us this Sunday if it ______? -- Sorry, I have no idea.
-- ______ new buildings! I can’t believe that. It ______ a poor village.-- Yes. Everything has changed here over these years.