Question

The bell rang _____the beginning of the class.

Answer 1

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”