What's the difference between the phrasal verbs fill up, fill out or fill in? Ailin maria asks Learners' Questions, and Dan answers! ... <看更多>

Now, let's look at the main verb. To fill something means to put something in an empty space to make full. And all of the meanings of fill out, ... ... <看更多>

'Fill in' can also be used to mean to inform or to complete. edit: and in fact it is this meaning of completion that is reflected in only being ... ... <看更多>