They left a boy to answer the bell.
他们留下一个孩子应门。
I rang the bell, but there was no answer.
我按了门铃，但没有人应门。
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。
If the door bell or telephone rings, ignore it or take the baby with you to answer it.
如果门铃或者电话铃响，不应理采它或让宝宝去接听。
If the door bell or telephone rings, ignore it or take the baby with you to answer it.
如果门铃或者电话铃响，不应理采它或让宝宝去接听。
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