I rang the bell, but there was no answer.

我按了门铃，但没有人应门。

《牛津词典》

Suddenly, I know all the answer, but the bell rang.

突然之间，我知道了所有题目的答案，但是铃声响了。

youdao

In minutes, I heard door bell ring, somebody answer the door, and then I overheard people were talking in English.

刚到家几分钟，就听到门铃声，有人开门，然后听到有人说英语。

youdao

On the first morning I am among just seven passengers who answer the bell at breakfast.

FORBES: Go with the Floe

"The one way you can't win a race is to quit it, and until somebody beats me, I'm going to answer the bell for every round of this fight, " he said.

NPR: Solid Wins for McCain; Clinton, Obama Close