完形填空。 One very cold morning, my, father and I were working on the farm. I asked him how long I must stay in the 1 . 'About an hour.' he answered. 'I wish I could go hone now-my 2 aches.' 'I am sorry, but can't you stay till lunch time?' said my father. 'But my headache is getting 3 .' 'Well,' said he, 'you may go home. I don't want you to work if you are sick. Go straight home 4 tell your mother to give you some rhubarb (大黄,一种苦药). It will 5 you a lot.' I went back home. However, I told my mother that my head was better, hoping not to 6 the terrible medicine. But it was too 7 . She understood my 8 as well as my father. So she prepared the rhubarb. I had to swallow (吞) all of the rhubarb. Dear me! How bitter it was! I would rather 9 all day in the field. But it cured (治愈) my laziness, and I learned that it is important to be 10 . Friends, keep it, though there is another and a better reason. (     )1. A. field (     )2. A. tooth (     )3. A. better (     )4. A. but (     )5. A. hurt (     )6. A. take (     )7. A. early (     )8. A. joke (     )9. A. work (     )10. A. kind B. hospital B. head B. worse B. or B. worry B. buy B. late B. duty B. play B. honest C. factory C. stomach C. less C. and C. help C. make C. easy C. problem C. study C. helpful