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The bell rang _____the beginning of the class.

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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?
The bell rang _____the beginning of the class.
答案：A
方法--排除法
B：rang 为过去式,若后加and,则announce也应为过去时 announced
C:用announcing时,为现在进行时做伴随状语,但announcing前应加逗号
D：若表示两并列动作,应为 and announced,此处不能直接用过去式或过去分词
答案A:the bell rang to announce 意为“铃响了,表明开始上课了”
The bell rang _____the beginning of the class. The bell ------- the beginning of class rang ,interruping ou bell __the beginning of class rang ,interrupting our game of the bell rang ( )the end of school At this moment the bell rang,the end of class A.announcing B At this moment the bell rang, ________ the end of class. A. at this moment the bell rang,____ the end of class 为什么填这个At this moment the bell rang,________ the end of class When the bell rang,he ran out of the class room,which__his t He rang the bell. when the bell rang, Student hurried to the class room___the bell rang.