I found a solution, but I found it so fast that it can't be the right solution.

You're not fast enough.

I'm tired of eating fast food.

Time has passed very fast.

Can you swim as fast as he?

You have a tendency to talk too fast.

However fast you may walk, you can't catch up with him.

You walk too fast for me to keep up with you.

Air travel is fast; sea travel is, however, restful.

A strong wind is blowing and I can't walk fast.

The express train went by so fast that we hardly saw it.

If you run fast, you can catch the train.

Walk fast so as to be in time.

Our car was fast and soon got ahead of the other cars.

When the fire broke out, he was fast asleep.

Best of all, he learns things fast.

How fast the plane is!

Do you swim very fast, too?

The rain made it impossible for me to drive fast.

I ran as fast as I could.

Malicious gossip spreads like wildfire. I guess that's why they say bad news travels fast.

Well, they say bad news travels fast.

Bad news travels fast.

I must make up for lost time by driving fast.

Lynn runs fast.

Mary swims as fast as Jack.

Mike ran very fast yesterday.

The urban population in most developing countries is increasing very fast.

Betty drives fast.

How fast Bill runs!

What a fast horse that is!

It is true he has a good fast ball, but he is often wild.

It is true that he has a good fast ball, but he is often wild.

No matter how fast you may walk, you can't catch up with him.

However fast you may try to run, you will never beat a motorbike.

No matter how fast you run, you won't catch up with him.

However fast you run, you won't be in time.

Flee never so fast you cannot flee your fortune.

No matter how fast you ran, you cannot win.

No matter how fast you drive, you won't get there on time.

Tom can run fast.

Tom's a beginner, but he catches on fast.

Tom doesn't run as fast as Bill.

How fast Tom works!

How fast Tom speaks!

Tom runs very fast.

Tom swims very fast.

Tom can swim as fast as you.

Tony can run fast.

Tony is a fast runner.

The door is shut fast.

Walk as fast as possible.

Run as fast as you can.

Running as fast as I could, I was able to catch up with my friend.

She ran as fast as she was able to.

Running as fast as she could, she still failed to catch the bus.

The Tsubasa is a very fast train.

A cheetah runs as fast as any animal.

My sole idea was to get there as fast as possible.

It is dangerous to drive so fast.

Please don't walk so fast. I can't keep pace with you.

Don't walk so fast.

Don't speak so fast, please.

Don't walk so fast! I can't keep up with you.

Running so fast is impossible for me.

Don't run so fast.

Don't speak so fast.

Please don't speak so fast.

Don't walk so fast. I can't keep up with you.

I can't keep up with you if you walk so fast.

I wish you wouldn't drive so fast. You're making the baby sick!

The old man was fast asleep when the bear came.

The train is running fast.

How fast the train is running!

How fast the train runs!

The thief ran fast.

His heart beat fast at the news.

Is that as fast as you can go?

The device is attached fast to the ceiling.

It is impossible to catch up with the fast runner.

The baby was fast asleep.

That student runs fast, doesn't he?

The car is very fast.

The car doesn't run fast.

The professor spoke too fast for anyone to understand.

The professor spoke too fast for anyone to understand him.

The company has hard and fast rules against lateness.

The news spread fast.

She was a strong, fast runner then.

Salesmen are usually fast talkers.

Mr Smith spoke so fast I couldn't take in what he said.

I got into trouble with the police by driving too fast.

Driving too fast is dangerous.

You're driving too fast.

Living life in the fast lane is like burning the candle at both ends.

Superman flies as fast as a rocket.

Susie can type many times as fast as I can.

John is too fat to run fast.

Some people have very fast serves.

Jack doesn't drive fast.

Jim drove too fast, which was reckless.