School usually (43) .... at seven o'clock in the morning. All students try to (44) .... at school on time. On Monday morning, the students have a flag raising ceremony. After having the ceremony, they (45) .... their classrooms and begin their lessons. They are free after the seventh period. Some students go home directly, while others practice playing basketball or volleyball in the school yard. 43. A. ends B. goes on C. D. begins continues 44. A. get rid of B.* arrive C. D: be rich. close go into come out of inside 45. A. B. C. D. goes on​