Use the correct word:

        No/now/know
A little boy didn't _____ his way to the nearest supermarked. There were _____ people in the street at this hour, so he had _____ one to ask. "How can I get to _____?" he thought. _____ matter how hard he tried, he could not remember his mother's explanation. "______ let me try again, "he said to himself and begged, "Let a sign be seen _____!", but ____ sign turned up