Before

She had met him before but couldn't remember where.

The runner finished the race before the other competitors.

Don't cross the street before the light turns green.

She always checks the weather forecast before going for a run.

You need to fill out the application before the deadline.

It's better to study the material before taking the exam.

The movie starts in ten minutes, so let's buy popcorn before we go to our seats.

Please arrive at the airport two hours before your flight.

Don't forget to turn off the lights before leaving the room.

We should double-check the reservation before heading to the restaurant.

You should brush your teeth before going to bed.

Let's have a quick meeting before the project deadline.

Let's clean the house before the guests arrive.