Malicious gossip spreads like wildfire. I guess that's why they say bad news travels fast.
We drove too fast to enjoy the beautiful scenery.
At first, I had difficulty understanding people when they spoke too fast.
The urban population in most developing countries is increasing very fast.
I wish you wouldn't drive so fast. You're making the baby sick!
You're speaking a little too fast for me. Would you speak a little more slowly?
A good ballboy or ballgirl must be able to concentrate hard and run fast.
Fast is the opposite of "slow."
It was surprising to see how fast the child grew up.
A fast child may win the race, but even a slow child can compete.
A fast walker can walk six kilometers in an hour.
What's your favorite fast food restaurant?
Tom loves coming here since he thinks this place serves the only fast food worth eating.
What surprised me most about that accident is how fast the lawyers arrived on the scene.