− Do you know the most ancient city in China ─ Xi’an well? − No, this is the first time I ___________ here.

 — You look sad. ____?— Oh, my grandmother’s very ill.

Spacecraft “Discovery” has failed in the course of launch. ----_______? They have been preparing for the test.

It is ten years ____he graduated from the university.

In no time _______ me if he had any further information for pig flu..