cooperative
The idiom "read the riot act" means to issue a stern warning or reprimand to someone, usually in a forceful or direct manner. It comes from a historical practice where a formal proclamation known as the Riot Act was read aloud to disperse unruly crowds or protests.
Get real: face reality, think and act in a serious fashion
adds up, makes sense
Keep an idea in ones head to act on it later.
together mean something different than when they are used separately
When someone puts two and two together, they draw an obvious conclusion from what is known.
"Building bridges" is an idiom for bonding, suggesting the creation of connections and closeness between people or groups.
They mean get your act together.
To tie the knot means to get married. The image is of two people tied together.
It's not really an idiom - "to account" is to tally up, add together, or count everything, so if you take something into account, you're adding the information into the whole.
idiom is a type of slang. so to say that something has an idiomatic expression, means that it uses slang words. so "get his act together" is idiomatic as its using slang words (act) to represent meanings of other words, as act is referring to the way he presents himself or maybe his lifestyle choices.
It's not really an idiom. It means "what are you thinking about."