The coast was clear.

The coast was clear.

As cold as cucumbers.

As cold as cucumbers.

No better than you should be.

No better than you should be.

To say that which is instructive and also pleasing.

To say that which is instructive and also pleasing.

To have a smattering knowledge of anything.

To have a smattering knowledge of anything.

The fat's all in the fire.

The fat's all in the fire.

To build castles in Spain.

To build castles in Spain.

As clear as a whistle.

As clear as a whistle.

Put himself upon his good behavior.

Put himself upon his good behavior.