Expressions about water are almost as common as water itself.
The expression to be in hot water is a very old expression. Hot water was used five hundred years ago to mean being in trouble. One story says it got that meaning from the custom of throwing extremely hot water down on enemies attacking a castle.
That no longer happens. But we still get in hot water. When we are in hot water, we are in trouble. It can be any kind of trouble—serious or not so serious. A person who breaks a law can be in hot water with the police. A young boy can be in hot water with his mother, if he walks in the house with dirty shoes.
Beingin deep water is almost the same as being in hot water. When you are in deep water, you are in a difficult position.
To keep your head above water is a colorful expression that means staying out of debt. A company seeks to keep its head above water during economic hard times. A man who loses his job tries to keep his head above water until he finds a new job.
Water over the dam is another expression about a past event. It is something that is finished. It cannot be changed. The expression comes from the idea that water that has flowed over a dam cannot be brought back again.
Another common expression to hold water, is about the strength or weakness of an idea or opinion that you may be arguing about. It probably comes from a way of testing the condition of a container.; If it can hold water, it is strong and has no holes in it. If your argument can hold water, it is strong and does not have any holes.
Throwing cold water also is an expression that deals with ideas or suggestions. It means to not like an idea. For example, you want to buy a new car because the old one has some problems. But your wife throws cold water on the idea, because she says a new car costs too much.
If Robert says he is in deep water, we may guess_________.

A．he is swimming under the water

B．he is tired of changing shoes

C．he nearly breaks a law

D．he faces a difficult choice

What can you say to your friend Jane, who is troubled by a mistake she has made?

A．Keep your head above water.

B．Throw cold water.

C．It is water over the dam.

D．It can hold water.

If your argument doesn’t hold water, then it is _________.

A．weak

B．convincing

C．logical

D．disappointing

The passage explains the origins of the following expressions EXCEPT_________.

A．to be in hot water

B．to keep your head above water

C．water over the dam

D．to hold water