.The World Health Organization gave a warning to the public without any ______when the virus of H1N1 hit Mexico in April, 2009.
Every evening after dinner,if not ________ from work,I will spend some time walking my dog.
—I didn't go to see the doctor yesterday. —But you ________.
I don't mind her criticizing me,but ________ is how she does it that I object to.
It was last night ________ I saw the comet.
—Did Linda see the traffic accident? —No,no sooner ________ than it happened.