Заполните пропуски подходящими по смыслу словами Learning a 1______ language is not an easy thing. I...: ответ на тест 348832 - Английский язык

Заполните пропуски подходящими по смыслу словами
Learning a 1______ language is not an easy thing. It is a long and slow process that takes a lot of 2______ and patience. But every 3______ person, every good specialist has to know English, because it is absolutely necessary today. Nowadays English is the 4______ of the world.