The bell rang _____the beginning of the class.A.to announce B.and announce C.announcing D.announced正确答案是什么 why?

when the bell rang, He rang the bell. 英语翻译------my lunch,the bell rang. he left the classroom afterthe bell rang改为同义句he__ __the classroom__the bell rang. while we were walking yesterday afternoon.the bell rang. they hadn't played fottball long when the bell rang the bell rang when i was hurrying ____the classroomawaybacktoby Finally the bell rang and we left s______. The bell rang at eight o’clock {改为一般疑问句} bell rang是什么意思 When the bell rang,the children hurried into the classroom.(改为同义句）When the bell rang,the children went into the classroom_____ _____ ______ I was listening to the radio when you (rang)the bell the first time.改成had rang行吗? We were having fun in the playground when the bell rang.(改为同义句)We _____ _______ ________ _______ in the playground when the bell rang. the door bell rang just now这个可以用过去完成时吗 the door bell had rang just now .再如 i had broken a cup just now 用介词填空 when the bell rang ,all the students ruched [ ] the classroom The bell rang __ all the student went out of the classroom 用and还是but When the bell rang,the students were running to the p______ . The bell(indicating)the end of the period rang,(indicating)our heated discussion.翻译下