完形填空。 There are twenty boys and twenty-five girls in our class. __ 1 __ of the boys is English. His __ 2 __ is Sam. He is thirteen. Two of the __ 3 __ are Americans. They are twins. __ 4 __ names are Mary and Jane. They are twelve. They are my __ 5 __. They can __ 6 __ English very well. We Chinese __ 7 __ all like the English boy and the American girls very much. __ 8 __ they all like us, too. We play games together. We help them and they help us, too. But where are the twins? Look! They __ 9 __ this way. Let's __ 10 __ hello to them. (     )1. A. One (     )2. A. sister (     )3. A. brothers (     )4. A. Your (     )5. A. friends (     )6. A. say (     )7. A. boys (     )8. A. But (     )9. A. are coming (     )10. A. ask B. Two B. school B. sisters B. His B. sisters B. talk B. students B. So B. look B. say C. Three C. brother C. girls C. Their C. teachers C. speak C. girls C. Or C. run C. give D. Four D. name D. friends D. Her D. students D. tell D. teachers D. And D. are going D. take