Between the two parts of the concert is an interval, ___ the audience can buy ice-cream.
Shortly after the accident,two _________police were sent to the sport to keep order.
The hero of the story is an artist in his_________ .
The Yellow River is_________river in China.
—What do you think of the book? —Oh,excellent.It’s well worth _________time.
She began to play table tennis_________,and became famous_________ .