Choose the correct word

1. I couldn't sleep because of the terrible thoughts that
   [packed|filled] my head all night.
2. Last night I saw a strange light
   [flickering|trembling] in the sky.
3. After working on the computer for over an hour I had to stop to
   [draw|keep] breath.
4. As he turned the corner, he
   [gained|raised] speed and finished in second place.
5. The car lights
   [grew|turned] faint as they disappeared in the distance.