The key question is not what can I gain but what do I have to lose.

You took the wrong key.

It was careless of you to lose the key.

Where was it that you found this key?

It goes without saying that diligence is a key to success.

Needless to say, diligence is a key to happiness.

There is a key on the desk.

I have a spare key to my house hidden outside.

As I left the house, I remembered the key.

We tend to forget that exercise is a key to good health.

New Year's Day is the key to the year.

If I lost my key, I wouldn't be able to lock the door.

After asking for my key at the front desk, I took the elevator to my floor.

While swimming in the pool, she lost her locker key.

Where did you find the key?

After I shut the door, I remembered I had left my key behind.

I lost the door key, so I can't enter the house.

It goes without saying that diligence is the key to success.

The key word is equality.

The minister appointed one of his cronies to a key position.

The boy was searching for the lost key.

The success of newly-developed applications and government-forced deregulation may hold the key to achieving this economic implementation.

The key of the symphony is G minor.

The key is on the desk.

Don't play with that key!

John took a key out of his pocket.

Can I have the key now, please?

Jim turned the key in the lock.

Please push the Ctrl+Alt+Del key to log on the system.

This is the key for the box.

Is this the key you are looking for?

Is this the key your uncle is looking for?

This is the key to the whole mystery.

This is the key I have been looking for.

This is the key which I have been looking for.

Here's the key, here's the contract.

This letter is the only key to the mystery.

Please take charge of this key.

This key admits to his room.

I'm afraid this key does not fit.

What's this key for?

This key won't go in the lock.

I lost my key about here.

Here is your key.

Get me the key.

Bring me the key.

Alex seemed to learn nouns such as "paper," "key" and "cork," and color names such as "red," "green" and "yellow."

Where did you put our key to the house?

I'll leave a key with my next-door neighbour in case you get here before I do.

May I borrow a duplicate key for Room 360?

"The key," he added, "is in the lock".

Without the key, she could not have entered the room.

I can't find my key.

I'm a lock without a key.

The key was nowhere to be found.

May I have the key?

Turn the key to the right.

I searched the drawer for the key.

I'm looking for my key.

The key was left in the room.

Please bring the master key.

Once divorced from key questions of national culture and identity, comparative literature loses its way.

I picked up a key I found on the way today.

The mayor presented him with the key to the city.

We found the key at last.

It was careless of you to lose my car key.

I may have put the key somewhere in this room.

I don't remember where I put my key.

I looked for the key.

I found the key underneath the mat.

I was at a loss when I lost my house key.

I have lost my key.

I have lost the key.

I asked for the key and went upstairs to my room.

I broke down the door because I lost the key.

I forgot the key and went back for it.

I seem to have misplaced my key last night.

I found the key for which I had been looking.

I left a duplicate key to the room with my mother.

I spent hours looking for the key that I had dropped.

Capital, land and labor are the three key factors of production.

It was careless of you to leave the key in the car.

I've lost my car key.

It was careless of you to leave the key in your car.

The Prime Minister appointed them to key Cabinet posts.

A good lawyer will always zero in on a key piece of evidence.

Money is the key factor when we decide to buy a new house.

It is education that is key to the success.

It goes without saying that honesty is the key to success.

Steel is a key industry.

I must have lost my key along the way.

The Bank of Japan lowered its discount rate by half a percentage point Monday, bringing the key lending rate to 4.5%.

Japan plays a key role in the world economy.

Perseverance, as you know, is the key to success.

Perseverance, it is often said, is the key to success.

I remember giving him the key.

He put the key on the desk as usual.

He looked for the key to the door.

He holds the key to this problem.

He had a duplicate key made from that one.

He turned up a key to the solution of the mystery.