The World Health Organization gave a warning to the public without any ______when the virus of H1N1 hit Mexico in April, 2009.
In the morning you can get up only______ all your equipment buried and you’ve got to dig it out.
She thinks women have to do more than men do when they ______ for jobs or honors.
_______ many times, he finally understood it.
Ladies and gentlemen, please remain ________ until the plane has come to a complete stop.
He told us whether _________ a picnic was still under discussion.