.The World Health Organization gave a warning to the public without any ______when the virus of H1N1 hit Mexico in April, 2009.
After living with his grandparents in the countryside fort en years, the boy returned to The big city____his parents worked.
He was impolite to theCustom Officer,____,of course,made things even worse.
Soon they got to the bank,____stood a big pine tree.
.One of the men held the view____the book said was right.
The young man went into the cinema and after____ seemed half an hour hecame out.