Fill up
/ˈfɪl ʌp/B1
PreIntermediate
1. To make something completely full or to become completely full.
- I need to fill up the gas tank before leaving for the trip.
- The auditorium filled up quickly as people arrived for the concert.
- He filled up the jug with water from the well.
- It's important to fill up on healthy foods before running a marathon.
- After an hour, the rain had filled up the buckets left outside.
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