完形填空。 This is Mike’s classroom. There are 30 1 . There is a clock 2 the wall. 3 clock is very old. There are 4 students: eighteen boys and 5 girls. 6 is their teacher. She is a good teacher. It’s about 4 o’clock. It’s time to go home. Look 7 Mike! He 8 behind the 9 . And the door is 10 . (     ) 1. A. desk and chair (     ) 2. A. on (     ) 3. A. A (     ) 4. A. thirty (     ) 5. A. twelve (     ) 6. A. Mr Wang (     ) 7. A. at (     ) 8. A. are (     ) 9. A. door (     ) 10. A.slim B. desk and chairs B. in B. An B. forty B. thirteen B. Miss Wang B. in B. is B. floor B. happy C. desks and chair C. at C. The C. seventy C. forty-two C. Teacher Wang C. to C. am C. school C. sad D. desks and chairs D. of D. / D. fifty D. thirty-two D. Wang Teacher D. / D. be D. flowers D. clean