He must have lived here for 10 years,  ____ he?

--- Alice , you feed the bird today , ______?--- But I fed it yesterday .

No one will be sad because humans will have learnt to fix many of the problems that affect us now, like war, pollution and hunger, ________ ?

-- ____     have you lived in this beautiful city?    -- For six years.

To have a dinner at a restaurant on the Eve of the Spring Festival, you need to reserve the restaurant months before, _____?