Alice received an invitation from her boss,__________ came as a surprise.
While large numbers of residents in this area ______ the A/H1N1 flu, very few suffered death.
He kept thinking of the question whether it was ____ for his father to change the habit of a life time in such a short time.
—When did your cousin begin to show his interest in medicine?—It was a Saturday ___ she noticed her uncle experimenting on a frog in his lab.
____ has been heated discussion over which country bakes the world’ s best pizza: Italy, where pizza began or the US, where it was globalized.
It was ____ exciting news that more than ten students in a single school were admitted to Tsinghua University in the same year.