Through

1. From one side to the other (movement across or inside something).
2. During the whole period of time (continuing without stopping).
3. By means of / because of (method or cause).

Sample Sentences

1. She walked through the park to get home.
2. The river flows through the valley.
3. He worked hard through the night to finish the project.
4. We succeeded through teamwork and determination.
5. The train passed through the tunnel quickly.