I knocked on the door but nobody answered.

我敲了门，但无人应答。

《牛津词典》

I called you last night but nobody answered.

我昨晚给你打过电话，但没人接。

youdao

I rang you up last night but nobody answered.

我昨晚给你打电话，但是没人接。

youdao

There was no car in the driveway on Thursday, and nobody answered the door or phone.

NPR: Answers Hard To Find After Deadly NY Gun Rampage

She found out that the children, who cannot be named for legal reasons, were at Mackrell's home and called the police when nobody answered.

BBC: Darren Mackrell

Nobody answered my letters or phone calls.

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