There are some policemen in the building.(改为否定句)

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Therearesomepolicemeninthebuilding.(改为否定句)Therearesomepolicemeninthebuilding.(改为否定句)Therearesomepoli

There are some policemen in the building.(改为否定句)
There are some policemen in the building.(改为否定句)

There are some policemen in the building.(改为否定句)
There isn't any policeman in the building.

there aren't any policemen in the building.