Cách sử dụng
The expression "be on the case" means to be actively working on a problem or situation in order to solve it. It is often used in professional environments or in detective work, but can also be used in everyday situations. For example, a police officer might say "I'm on the case" when they are investigating a crime, or a colleague might say "I'll be on the case" when they are given a task to complete at work. Essentially, the expression is used to convey that someone is taking responsibility and making an effort to solve the issue at hand.