Choose the correct particle Back all your computer data on an external hard drive. Due to a severe injury, the athlete backed of the competition. Janet refused to back on her demands. Scientists are carrying research to predict natural disasters. The police officer asked the driver to back from his vehicle. The rescue search was called due to bad weather conditions. The rescue workers carried searching for survivors despite the darkness.

Задание

Choose the correct particle

Back [up|down] all your computer data on an external hard drive.
Due to a severe injury, the athlete backed [out|away] of the competition.
Janet refused to back [away|down] on her demands.
Scientists are carrying [off|out] research to predict natural disasters.
The police officer asked the driver to back [away|up] from his vehicle.
The rescue search was called [out|off] due to bad weather conditions.
The rescue workers carried [on|back] searching for survivors despite the darkness.