完形填空。 Dear Mum, I am happy here. I have 1 new friends. They are Jill and Bill. Jill is twelve. She comes 2 the USA. Bill is twelve, too. He is 3 . 4 are polite and helpful. We are all good friends. After school, we often (经常) go to ABC park. The park is 5 the left of my school. It's not big 6 it's clean. The park is very 7 . There are 8 trees and flowers in it. In the middle of the park, 9 is a playground. We often 10 football there. Best wishes. Yours, David (     )1. A. three (     )2. A. of (     )3. A. England (     )4. A. We (     )5. A. on (     )6. A. and (     )7. A. small (     )8. A. a lot (     )9. A. it (     )10. A. watch B. two B. for B. an English B. They B. at B. but B. big B. any B. this B. play C. one C. from C. English C. He C. beside C. or C. beautiful C. many C. there C. make