EN
necessary
It is necessary for you to see a doctor at once.
It is necessary for you to see a doctor at once.
I won't be able to go travelling until the requisite visa fees are paid.
I am positive that he is wrong.
Another interesting source of energy is the heat that can be recovered from radioactive waste material.
Death is an integral part of life.
The mandatory character of schooling is rarely analyzed in the multitude of works dedicated to the study of the various ways to develop within children the desire to learn.
If school wasn't obligatory, I would stop going there.