完形填空。 One morning, a crow (乌鸦) sits __1__ an apple tree. There __2__ some meat in her mouth. She wants to give it to __3__ . __4__ old fox looks for (寻找) his food. He __5__ the crow and the meat. He wants to get the __6__ . So he says to th e crow, 'Good morning, Mrs. Crow. __7__ are you?' But the crow does n't say a word. So the fox says to the crow again, 'You are nice.Your clothes (衣服) are nice, too. I like your songs __8__ . Please sing a song for __9__ .' Mrs. Crow is very happy. So she opens h er mouth and sings. The meat drops down (掉下) into __10__ mouth. (     )1. A. on (     )2. A. is (     )3. A. baby (     )4. A. The (     )5. A. looks (     )6. A. crow (     )7. A. What (     )8. A. very (     )9. A. him (     )10. A. the bird's B. behind B. are B. babies B. An B. knows B. meat B. How B. at all B. her B. the crow's C. in C. has C. her babies C. A C. sees C. bird C. Where C. very much C. me C. the fox's