Rewrite the following passage in the passive. some people saw a ufo in the sky above london last night. they reported it to the police. the army sent helicopter to look at it more closer. the ufo shot the helicopter down and killed both men in it. people have given photographs of the ufo to the police. experts are looking at them now.
A UFO was seen by some people in the sky above London last night. It was reported by them to the police. Helicopter was sent by the army to look at it more closer. The helicopter was shot down and both men in it were killed by the UFO. Photographs of the UFO had given to the police by people. They are being looked at by experts now.