完形填空。 I'm Jack. I'm 1 American boy. I'm twelve. I'm a student 2 a school. I'm in Class 7, Grade 6. Tom is my good friend. We are in the 3 class. He is twelve, too. It's a picture of 4 family here. 5 look at it. The man behind the chair is his father. The woman in a red hat is his mother. She is a teacher. Tom has 6 sisters. Their names 7 Lucy and Lily. They have a cat. 8 name is Huahua. Now it's 9 the floor under the desk. 10 twin sisters are students, too. They are in the same class. (     )1. A. a (     )2. A. of (     )3. A. some (     )4. A. he's (     )5. A. It's (     )6. A. one (     )7. A. am (     )8. A. It (     )9. A. near (     )10. A. The B. an B. for B. one B. he B. It B. tow B. is B. It's B. on B. This C. / C. on C. same C. him C. Let C. three C. are C. Its' C. in C. Tow D. the D. to D. different D. different D. Let's D. four D. be D. Its D. to D. A