可是要是没人回答门铃或者是有人把我们赶开该怎么办呢？

But what if no one come to the door, or if someone chased us away?

youdao

警察把人群从入口处赶开。

The police drove the crowd away from the entrance.

youdao

警察把人群从入口处赶开。

The police drove the crowd away from the entrance.

youdao