Find the mistakes. Americans are becoming (A) more and more (B) concerned at (C) their health these days (D)​

Ответ:

Предлог at неправильный, потому что мы говорим concerned about something, а не concerned at something.

Correct sentence:

Americans are becoming more and more concerned about their health these days.

С наступающим вас) Удачи в английском)