Cloze 9　　Frank was a very talkative little boy. He never saw a new thing 1______ asking a great many questions about it.
　　His 2______ was very patient and kind. When it was 3______to answer his questions, she would do so. Sometimes she would say, “You are not 4______enough to understand that, my son. When you are ten years old, you many ask me about it, and I will tell you.”
　　The first time Frank saw an hourglass(沙漏)，he was very much interested, but he did not know 5______it was. His mother said, ‘An hourglass is made in the 6______of the figure 8. The sand is put in at one end, and runs through a small hole in the 7______. As much sand is put into the glass as will run through in an hour.
　　When Frank watched the little stream of sand, he was impatient, 8______it would not run faster.
　　“Let me 9______it, mother,” said Frank:“ it is lazy, and will never get through.”
　　“Oh yes, it will, my son,” said his mother. “The sand moves down little by little, but it moves all the time.
　　“When you look at the 10______of the clock, you think they go very slowly, and so they do; but they never 11______.”
　　“While you are playing, the sand is running, grain (颗粒) by grain. The hands of the clock are moving, second by second. At night, the sand in the hourglass has run through twelve times. The hour hand of the clock has moved all around its face. This is because they keep working every 12______. They do not stop to think how much they have to do, or how long it will 13______them to do it.
　　Now Frank’s mother wanted him to learn a little poem, but he said, “Mother, I can 14______do it.
　　His mother said, “Study all the time. Never stop to ask how long it will take to learn it. You will be able to say it very soon.”
　　Frank 15______his mother’s advice. He studied line after line, very busily; and in one hour and half he knew the poem perfectly.