Cách sử dụng
The expression "check off" means to mark or indicate that something has been completed or accomplished. It is commonly used when you have a list of tasks to do, and you mark each task as completed. For example, if you have a list of groceries to buy, you can check off each item as you put it in your cart. You can also use this expression when you have a to-do list at work, and you mark each task as completed.