Запишите предложения. Выпишите из них сказуемые, определите их видо-временные формы и залог. Переведите.
1.Great efforts have been undertaken by man in the area of the environment protection.
2.They could not solve this complex problem without applying digital computers.
3.The development of automatic control systems is being paid much attention to.
4.The worker was told to increase the pressure up to 25 atmospheres.

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